Fixing clamp for machining of drilling and tapping machine

Abstract

The invention relates to a fixing clamp for drilling and tapping machine machining, and belongs to the technical field of drilling and tapping machine machining. The fixing clamp for drilling and tapping machine machining comprises a mounting base, a plurality of mounting grooves are formed in the outer side of the mounting base, fixing bases are movably arranged on the inner sides of the mounting grooves, and gaps exist between the fixing bases and the mounting grooves; the two ends of the fixing base are fixed into the mounting grooves through buffer mechanisms, a plurality of fixing grooves are formed in the upper side of the fixing base, and a plurality of positioning mechanisms for fixing workpieces into the fixing grooves are rotationally arranged on the inner side of the fixing base. On one hand, the situation that the screw tap is attached to the inner hole wall of the workpiece for a long time is avoided, the screw tap is prevented from generating much cutting heat, the service life of the screw tap is prolonged, the positioning mechanism can fix the workpiece on the inner sides of the fixing grooves at the same time, and the workpiece fixing efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling and tapping machine processing, and particularly relates to a fixing fixture for drilling and tapping machine processing. Background Art

[0002] A drilling and tapping machine is a machine tool that combines the functions of a drilling machine and a tapping machine. It is fully automatically controlled by CNC equipment and performs a series of processing operations such as drilling, tapping, and discharging on the parts to be processed, thereby achieving the purpose of opening threaded holes on the parts. During the drilling and tapping process, the workpiece needs to be fixed on the fixture, and then drilling and tapping are carried out.

[0003] For example, in the Chinese utility model patent with announcement number CN221065306U and name of a special-shaped parts fixing fixture for CNC multi-axis drilling and tapping machine processing, it includes a placing table, a placing plate is installed at the middle position of the top of the placing table, and mounting plates are installed at the positions of the four corners of the placing plate on the top of the placing table, and the four groups of mounting plates are provided with through grooves at the top positions inside, and four groups of slides are installed on the inner walls of the bottom ends of the four groups of through grooves, and the corresponding four groups of slides are respectively slidably connected to the corresponding sides of the corresponding slide rails. Although the above-mentioned prior art can use a tooling fixture to fix the parts before the parts are processed, it can only clamp one workpiece at a time, so that a new workpiece needs to be reinstalled after drilling and tapping, which reduces the tapping efficiency. Therefore, a fixing fixture for drilling and tapping machine processing is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a fixing fixture for drilling and tapping machines with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A fixing fixture for drilling and tapping machine processing includes a mounting base, a plurality of mounting grooves are provided on the outer side of the mounting base, a plurality of fixing bases are movably provided on the inner sides of the plurality of mounting grooves, a gap exists between the fixing base and the mounting grooves, both ends of the fixing base are fixed inside the mounting grooves by a buffer mechanism, a plurality of fixing grooves are provided on the upper side of the fixing base, and a plurality of positioning mechanisms for fixing the workpiece in the fixing grooves are rotatably provided on the inner side of the fixing base.

[0006] As a further optimization scheme of the present invention, the buffer mechanism includes a buffer groove opened on the side walls at both ends of the installation groove, a buffer block fixedly connected to the fixed base is slidably arranged on the inner side of the buffer groove, buffer springs fixedly connected to the inner side of the buffer groove are fixedly arranged on both sides of the buffer block, and two limit blocks respectively located on both sides of the buffer block are fixedly arranged on the inner side of the buffer groove.

[0007] As a further optimization solution of the present invention, the buffer groove is arranged obliquely, and the inclination angle of the buffer groove is the same as the thread lead angle of the tapping thread.

[0008] As a further optimization scheme of the present invention, the positioning mechanism includes a positioning rod rotatably arranged on the inner side of the fixed base, a fixed sleeve on the positioning rod is provided with a plurality of positioning cams for fixing the workpiece in the fixed groove, one end of the positioning rod is provided with a fixing component for fixing it, and one end of the positioning rod is provided with a water inlet component.

[0009] As a further optimization scheme of the present invention, the fixing assembly includes a positioning thread arranged at one end of the positioning rod, one end of the positioning rod passes through one end of the fixed base, and one end of the positioning rod is provided with a positioning nut that matches the positioning thread.

[0010] As a further optimization scheme of the present invention, the water inlet assembly includes a water inlet channel opened on the inner side of the positioning rod, a water inlet hose connected to the water inlet channel is fixedly arranged at one end of the positioning rod, a solenoid valve is arranged on the water inlet hose, the positioning rod is provided with a plurality of connecting holes located on the inner side of the positioning cam, and the positioning cam is provided with a water spray hole matching the connecting hole.

[0011] As a further optimization scheme of the present invention, a plurality of clamping grooves connected with the side walls of the fixing groove are opened on the inner side of the fixed base, and a plurality of the positioning cams are respectively arranged on the inner sides of the plurality of clamping grooves. The clamping groove adopts a cavity structure with one side open and the rest closed, and a through hole connected with the clamping groove is opened on the upper side of the fixed base.

[0012] As a further optimization scheme of the present invention, the angle between the water spray hole and the farthest end of the positioning cam is 90°, and when the positioning cam fixes the workpiece in the fixing groove, the water spray hole is located directly below the through hole.

[0013] As a further optimization solution of the present invention, a rotating rod is fixedly provided on the outer surface of one end of the positioning rod, and an operating groove matching with one end of the positioning rod is opened at one end of the mounting base.

[0014] As a further optimization solution of the present invention, the mounting base adopts a regular prism structure, and a plurality of the fixed bases are respectively arranged on each surface of the mounting base.

[0015] The beneficial effects of the present invention are: 1. In the present invention, the bottoms of multiple workpieces are inserted into the inner side of the fixing groove, and then the rotating rod is rotated to drive the positioning rod to rotate, so that the multiple positioning cams on the positioning rod rotate on the inner side of the clamping groove, so that the multiple positioning cams are rotated from the inner side of the clamping groove to the inner side of the fixing groove, so that the workpieces inside the multiple fixing grooves are fixed at the same time, thereby improving the fixing efficiency. In addition, the mounting base adopts a regular polygonal prism structure, so multiple workpieces can be installed on each surface, further increasing the number of workpieces fixed at one time, so that the workpieces do not need to be installed one by one during the tapping process. Only the mounting base needs to be rotated to rotate the new workpiece to the upper side, so that the new workpiece can be tapped, further improving the workpiece tapping efficiency.

[0016] 2. In the present invention, by means of the buffer groove, the buffer block and the buffer spring, the workpiece mounted on the upper side of the fixed base can be vibrated in the process of tapping by following the thread lead angle of the thread, so that the tap can vibrate on the tapping surface of the inner hole. On the one hand, the tap can be prevented from being in contact with the inner hole wall of the workpiece for a long time, so that the tap can be prevented from generating too much cutting heat, thereby increasing the service life of the tap. In addition, the heat dissipation effect of tapping can be improved by vibrating the tap. On the other hand, by making the workpiece vibrate in the direction of the thread lead angle during the tapping process, the cutting force on the tap can be reduced by vibrating the tap, so that the tap can be prevented from rolling and the service life of the tap can be increased.

[0017] 3. In the present invention, clean water can be drawn into the inner side of the positioning rod through the water inlet hose, and then flow into the inner side of the water spray hole on the positioning cam through the connecting hole on the positioning rod, so that the clean water is sprayed out through the water spray hole, and the clean water can be sprayed onto the surface of the tap, which can cool the tap on the one hand, and on the other hand, can wash away the waste chips from tapping to prevent the waste chips from scratching the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first overall structural schematic diagram of the present invention; Figure 2 is a second overall structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the overall structure of the mounting base of the present invention; Figure 4 It is a schematic diagram of the overall structure of the positioning mechanism of the present invention; Figure 5 The present invention Figure 1 Enlarged view of point A in the middle; Figure 6 The present invention Figure 2 Enlarged view of point B in the middle; Figure 7 The present invention Figure 2 Enlarged view of point C in the middle; Figure 8 The present invention Figure 3 Enlarged view of point D in the middle; Fig. 9 The present invention Figure 4 Enlarged view of point E in the middle; Fig.10 The present invention Figure 4 Enlarged view of point F in the middle.

[0019] In the figure: 1. mounting base; 2. mounting groove; 3. fixing base; 4. fixing groove; 5. positioning mechanism; 501. positioning rod; 502. positioning cam; 503. water spray hole; 504. positioning thread; 505. positioning nut; 506. rotating rod; 507. water inlet hose; 508. solenoid valve; 509. connecting hole; 510. water inlet channel; 6. through hole; 7. buffer mechanism; 701. buffer groove; 702. buffer block; 703. buffer spring; 704. limit block; 8. clamping groove; 9. operation groove. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example 1: Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10As shown, a fixing fixture for drilling and tapping machine processing includes a mounting base 1, the mounting base 1 adopts a regular prism structure, and the mounting base 1 of this embodiment is illustrated by a regular hexagonal prism. The shape of the mounting base 1 can be flexibly selected according to the process, and the six outer surfaces of the mounting base 1 are all provided with mounting grooves 2, and the cross-sections of the six mounting grooves 2 are regular triangle structures. The inner sides of the six mounting grooves 2 are all provided with a fixing base 3, and the upper side of the fixing base 3 is provided with a plurality of fixing grooves 4, and the inner side of the fixing groove 4 is plugged with a workpiece (not shown in the figure), and the inner side of the fixing base 3 is rotatably provided with a plurality of positioning mechanisms 5 for fixing the workpiece in the fixing groove 4, and the positioning mechanism 5 includes a rotating A positioning rod 501 is movably arranged on the inner side of the fixed base 3, and a rotating rod 506 is fixedly arranged on the outer surface of one end of the positioning rod 501. An operating groove 9 matching with one end of the positioning rod 501 is provided at one end of the mounting base 1. The positioning rod 501 is conveniently rotated through the operating groove 9 to improve the convenience of operation. A plurality of positioning cams 502 for fixing the workpiece in the fixed groove 4 are fixedly sleeved on the positioning rod 501. A plurality of clamping grooves 8 communicating with the side walls of the fixed groove 4 are provided on the inner side of the fixed base 3. The plurality of positioning cams 502 are respectively arranged on the inner sides of the plurality of clamping grooves 8. The positioning rod 501 rotates through the plurality of clamping grooves 8. The clamping groove 8 is open on one side. The closed cavity structure is a cavity structure with a plurality of holes, a positioning thread 504 is provided at one end of the positioning rod 501, and one end of the positioning rod 501 passes through one end of the fixed base 3. A positioning nut 505 that is threadably matched with the positioning thread 504 is provided at one end of the positioning rod 501. When in use, a plurality of workpieces are respectively inserted into a plurality of fixed grooves 4 on the same straight line, and then the rotating rod 506 at one end of the positioning rod 501 is rotated, so that the positioning rod 501 can be driven to rotate, thereby driving a plurality of positioning cams 502 on the positioning rod 501, so that the protruding part of the positioning cam 502 rotates from the inner side of the clamping groove 8 to the inner side of the fixed groove 4, thereby causing one end of the positioning cam 502 to top When the positioning cam 502 is against the side wall of the workpiece, the raised part of the positioning cam 502 is in a horizontal state, so that the workpiece is fixed on the inner side of the fixing groove 4 to prevent the workpiece from shaking during the tapping process, thereby affecting the tapping accuracy. When the positioning rod 501 drives the positioning cam 502 to fix the workpiece, the positioning nut 505 is rotated so that the positioning nut 505 is threadedly matched with the positioning thread 504 on the positioning rod 501, so that one side of the positioning nut 505 abuts against one side of the fixed base 3, so that the positioning rod 501 can be fixed to prevent the positioning rod 501 from resetting and rotating to affect the positioning accuracy of the positioning cam 502.

[0022] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9As shown, a water inlet assembly is provided at one end of the positioning rod 501, and the water inlet assembly includes a water inlet channel 510 opened on the inner side of the positioning rod 501, and a water inlet hose 507 connected to the water inlet channel 510 is fixedly provided at one end of the positioning rod 501. The water inlet hose 507 has a certain elasticity, which is convenient for fixing the vibration of the base 3 without affecting the water inlet operation. One end of the water inlet hose 507 is connected to a water pump (not shown in the figure), and clean water is pumped into the inner side of the water inlet channel 510 through the water inlet hose 507 by the water pump. A solenoid valve 508 is provided on the water inlet hose 507, and the solenoid valve 508 can remotely control the water inlet hose 507. 7 is turned on and off, so that the water spraying operation can be adjusted according to the workpiece at different tapping positions. The positioning rod 501 is provided with a plurality of connecting holes 509 located inside the positioning cam 502, and the positioning cam 502 is provided with water spraying holes 503 matched with the connecting holes 509. During installation, the axial rotation end of the positioning cam 502 is fixedly sleeved on the positioning rod 501, and the water spraying holes 503 on the upper side of the axial rotation end of the positioning cam 502 correspond to the connecting holes 509 on the positioning rod 501. The upper side of the fixed base 3 is provided with a through hole 6 connected to the clamping groove 8, and the water spraying holes 503 and the positioning cam 50 2, the angle between the farthest ends is 90°, that is, the axis of the water spray hole 503 is perpendicular to the long axis of the positioning cam 502, so that when the positioning cam 502 clamps and fixes the workpiece, the water spray hole 503 on the positioning cam 502 cooperates with the through hole 6. When in use, when the positioning rod 501 drives the plurality of positioning cams 502 to rotate, the workpiece located inside the plurality of fixing grooves 4 is fixed. When the positioning cam 502 fixes the workpiece in the fixing groove 4, the water spray hole 503 is located directly below the through hole 6. Then, the clean water is pumped into the inner side of the water inlet channel 510 through the water inlet hose 507 by the water pump, and then Clean water is passed into the water spray hole 503 on the positioning cam 502 through the connecting hole 509 on the positioning rod 501, so that the clean water is sprayed out through the water spray hole 503. Since the water spray hole 503 is located directly below the through hole 6, the clean water sprayed from the water spray hole 503 is sprayed from the through hole 6, so that the clean water is sprayed onto the surface of the tap. On the one hand, the tap is cooled down and the waste chips on the surface of the tap are washed away to prevent the waste chips from accumulating in the thread surface, making the tapped thread uneven and affecting the thread quality. On the other hand, the waste chips from tapping can be washed away to prevent the waste chips from scratching the workpiece.

[0023] Embodiment 2: Based on embodiment 1, further improvement is made in that Figure 2 , Figure 3 , Figure 8As shown, both ends of the six fixed bases 3 are provided with buffer mechanisms 7 connected to the inner side walls of the mounting grooves 2, and there is a gap between the fixed base 3 and the mounting grooves 2, so that the fixed base 3 can vibrate on the inner side of the mounting grooves 2 through the gap, and the buffer mechanism 7 includes buffer grooves 701 provided on the side walls of both ends of the mounting grooves 2, and the buffer grooves 701 are tilted, and the inclination angle of the buffer grooves 701 is the same as the thread lead angle of the tapping thread, and a buffer block 702 is slidably provided on the inner side of the buffer groove 701, and both ends of the fixed base 3 are fixedly connected to the buffer block 702, and both sides of the buffer block 702 are fixedly provided with buffer springs 703 fixedly connected to the inner side of the buffer groove 701, and two limit blocks 704 respectively located on both sides of the buffer block 702 are fixedly provided on the inner side of the buffer groove 701, and the distance between the limit block 704 and the buffer block 702 is less than the depth of the tapping thread, so that the buffer block 702 can vibrate within the range of the tapping thread depth, thereby improving the tapping accuracy. When in use, since both ends of the entire fixed base 3 are slidably arranged by the buffer block 702 It is installed on the inner side of the buffer groove 701, so when the workpiece on the upper side of the fixed base 3 is in the process of tapping, it will drive the fixed base 3 to vibrate, and then the buffer blocks 702 at both ends of the fixed base 3 will vibrate on the inner side of the buffer groove 701. Through the buffer spring 703 inside the buffer groove 701, the buffer block 702 can be vibrated and reset, so that the workpiece on the upper side of the fixed base 3 vibrates during the tapping process. Since the inclination angle of the buffer groove 701 is the same as the thread lead angle of the tapping thread, the vibration direction of the fixed base 3 and the workpiece is consistent with the thread lead angle of the tapping thread, so that the tapping surface of the inner hole vibrates. On the one hand, it avoids the tap from being in contact with the inner hole wall of the workpiece for a long time, prevents the tap from generating more cutting heat, and improves the service life of the tap. In addition, through vibration tapping, the heat dissipation effect of tapping can also be improved. On the other hand, by making the workpiece vibrate along the direction of the thread lead angle during the tapping process, the cutting force on the tap can be reduced through vibration tapping, the tap can be prevented from rolling, and the service life of the tap can be improved.

[0024] The fixing fixture 505 is used to fix the workpiece 501, and the fixing screw 504 is used to fix the workpiece 501. The fixing screw 504 is used to fix the workpiece 501. The fixing screw 504 is used to fix the workpiece 501. 3 is in a vertical state, so that the water spray hole 503 cooperates with the through hole 6, and then when the tap taps the workpiece, the clean water is pumped into the inner side of the water inlet channel 510 through the water pump through the water inlet hose 507, and then the clean water is passed into the water spray hole 503 on the positioning cam 502 through the connecting hole 509 on the positioning rod 501, so that the clean water is sprayed out through the water spray hole 503, and the clean water can be sprayed out through the through hole 6, so that the tap is cooled and cleaned. In the process of tapping the workpiece, the tapping of the workpiece will drive the fixed base 3 to vibrate along the thread lead angle of the tapping thread, so as to avoid the tap from being attached to the inner hole wall of the workpiece for a long time, prevent the tap from generating more cutting heat, and improve the service life of the tap. When all the workpieces on one side of the mounting base 1 are tapped, it is only necessary to rotate the mounting base 1 60° to rotate all the workpieces on the next side to the upper side, so that the next batch of workpieces can be tapped. By analogy, the workpieces on all sides of the mounting base 1 can be tapped continuously, thereby improving the efficiency of workpiece tapping.

[0025] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A fixing fixture for drilling and tapping machine processing, comprising a mounting base (1), characterized in that: The outer side of the mounting base (1) is provided with a plurality of mounting grooves (2), the inner sides of the plurality of mounting grooves (2) are all movably provided with fixed bases (3), a gap exists between the fixed bases (3) and the mounting grooves (2), the two ends of the fixed base (3) are fixed inside the mounting grooves (2) through buffer mechanisms (7), the upper side of the fixed base (3) is provided with a plurality of fixed grooves (4), and the inner side of the fixed base (3) is rotatably provided with a plurality of positioning mechanisms (5) for fixing the workpiece in the fixed grooves (4).

2. The fixing fixture for drilling and tapping according to claim 1, characterized in that: The buffer mechanism (7) comprises a buffer groove (701) provided on the side walls at both ends of the installation groove (2); a buffer block (702) fixedly connected to the fixed base (3) is slidably arranged on the inner side of the buffer groove (701); buffer springs (703) fixedly connected to the inner side of the buffer groove (701) are fixedly arranged on both sides of the buffer block (702); and two limit blocks (704) respectively located on both sides of the buffer block (702) are fixedly arranged on the inner side of the buffer groove (701).

3. The fixing fixture for drilling and tapping according to claim 2, characterized in that: The buffer groove (701) is arranged to be inclined, and the inclination angle of the buffer groove (701) is the same as the thread lead angle of the tapping thread.

4. The fixing fixture for drilling and tapping machine processing according to claim 1, characterized in that: The positioning mechanism (5) comprises a positioning rod (501) rotatably arranged inside the fixed base (3); a plurality of positioning cams (502) are fixedly sleeved on the positioning rod (501) for fixing the workpiece in the fixing groove (4); a fixing component for fixing the positioning rod (501) is arranged at one end; and a water inlet component is arranged at one end of the positioning rod (501).

5. The fixing fixture for drilling and tapping machine processing according to claim 4 is characterized in that: The fixing assembly comprises a positioning thread (504) arranged at one end of a positioning rod (501), one end of the positioning rod (501) passes through one end of a fixing base (3), and one end of the positioning rod (501) is provided with a positioning nut (505) threadably matched with the positioning thread (504).

6. A fixing fixture for drilling and tapping according to claim 5, characterized in that: The water inlet assembly comprises a water inlet channel (510) provided on the inner side of the positioning rod (501); a water inlet hose (507) connected to the water inlet channel (510) is fixedly provided on one end of the positioning rod (501); a solenoid valve (508) is provided on the water inlet hose (507); a plurality of connection holes (509) located on the inner side of the positioning cam (502) are provided on the positioning rod (501); and a water spray hole (503) cooperating with the connection hole (509) is provided on the positioning cam (502).

7. A fixing fixture for drilling and tapping according to claim 6, characterized in that: A plurality of clamping grooves (8) communicating with the side walls of the fixing groove (4) are provided on the inner side of the fixing base (3); a plurality of positioning cams (502) are respectively arranged on the inner sides of the plurality of clamping grooves (8); the clamping grooves (8) have a cavity structure with one side open and the rest closed; a through hole (6) communicating with the clamping groove (8) is provided on the upper side of the fixing base (3).

8. The fixing fixture for drilling and tapping machine processing according to claim 7, characterized in that: The angle between the water spray hole (503) and the farthest end of the positioning cam (502) is 90°. When the positioning cam (502) fixes the workpiece in the fixing groove (4), the water spray hole (503) is located directly below the through hole (6).

9. The fixing fixture for drilling and tapping according to claim 8, characterized in that: A rotating rod (506) is fixedly provided on the outer surface of one end of the positioning rod (501), and an operating groove (9) cooperating with one end of the positioning rod (501) is provided at one end of the mounting base (1).

10. A fixing fixture for drilling and tapping according to any one of claims 1 to 9, characterized in that: The mounting base (1) adopts a regular prism structure, and a plurality of the fixing bases (3) are respectively arranged on each surface of the mounting base (1).

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