Drill bit offset grinding positioning tool

Abstract

The utility model relates to the technical field of drill bit machining equipment, in particular to a drill bit offset grinding positioning tool which is provided with a workbench, a left positioning mechanism and a right positioning mechanism are arranged on the workbench, and the left positioning mechanism comprises a left fixing base, a left front idler wheel, a left rear idler wheel, a left upper pressing wheel, a driving wheel, a driving wheel and a driving motor. The right positioning mechanism comprises a right fixing base, a right front roller, a right rear roller and a right upper pressing wheel, the two ends of the drill bit are arranged between the roller and the pressing wheel of the left positioning mechanism respectively, positioning grinding is achieved between the roller and the pressing wheel of the right positioning mechanism, and the device has the advantages of being simple in structure, good in grinding effect, high in grinding precision, capable of saving time and labor and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bit processing equipment, in particular to a drill bit break grinding positioning tool with simple structure, good grinding effect, high grinding precision and time and labor saving. Background Art

[0002] As we all know, carbide-based slender drills are difficult to process. Before processing the spiral groove on the drill, the front and rear ends of the drill need to be ground separately. Since the carbide drill material is very hard, the center holes at both ends are difficult to process. The traditional process uses electrodes to drill holes. The center holes at both ends are sometimes not good, which affects the roundness after grinding. After grinding the outer circle, the front center hole of the drill needs to be removed. Another traditional method is to weld the center hole bead on both ends of the drill blank, and then remove the center hole bead after the outer circle of the carbide drill is ground. These two methods are time-consuming and laborious. Summary of the invention

[0003] The utility model aims to solve the above-mentioned deficiencies in the prior art and to provide a drill bit break grinding positioning tool which has a simple structure, good grinding effect, high grinding precision and saves time and effort.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A drill bit differential grinding positioning tool is provided with a workbench, characterized in that the workbench is provided with a left positioning mechanism and a right positioning mechanism, the left positioning mechanism comprises a left fixed seat, a left front roller, a left rear roller, a left upper pressure wheel, a driving wheel, an active wheel, and a driving motor, the left fixed seat is fixed on the workbench, the right side surface of the left fixed seat is respectively connected to the left front roller and the left rear roller, the left front roller and the left rear roller are respectively connected to the driving wheel via roller shafts, the active wheel is respectively synchronously driven and connected to the driving wheels of the left front roller and the right rear roller, and the active wheel is connected to the output of the driving motor The right positioning mechanism comprises a right fixed seat, a right front roller, a right rear roller and a right upper pressure wheel. The right fixed seat is fixed on the workbench. The right front roller and the right rear roller are rotatably connected to the side of the right fixed seat. The right upper pressure wheel is installed above the right front roller and the right rear roller. The two ends of the drill bit are respectively placed between the roller and the pressure wheel of the left positioning mechanism and between the roller and the pressure wheel of the right positioning mechanism to realize positioning grinding.

[0006] The left positioning mechanism and the right positioning mechanism of the utility model are connected with the working table in a sliding and positioning manner. The working table is provided with a slide rail. The left fixing seat and the right fixing seat are connected with the slide rail in a sliding manner through the slide seats.

[0007] The slide rail of the utility model is provided with a dovetail groove, a dovetail boss matched with the dovetail groove is connected to the slider, and the slider is slidably connected with the slide rail via the dovetail groove and the dovetail boss.

[0008] The upper parts of the left and right fixed seats described in the utility model are respectively connected to L-shaped support frames, the vertical parts of the L-shaped support frames are respectively connected to the left and right fixed seats, the transverse parts of the L-shaped support frames are connected to pressure rods, the lower ends of the pressure rods are rotatably connected to the upper left pressure wheel or the upper right pressure wheel, a spring is sleeved on the pressure rod, and the upper end of the pressure rod extends out of the transverse part of the L-shaped support frame and is connected to the adjusting nut.

[0009] The right fixing seat of the utility model is provided with a plug hole, which is located between the right front roller, the right rear roller and the right upper pressure wheel. A detachable ejector pin is inserted into the plug hole, and the drill bit is positioned by the ejector pin.

[0010] The driving wheel of the utility model is respectively connected with the driving wheels of the left front roller and the right rear roller through synchronous driving belts, and the driving motor is fixed on the left fixing seat through a bracket.

[0011] The left fixed seat and the right fixed seat described in the utility model are respectively fixedly connected to the sliding seat via an adjustment plate, a transverse incision is provided on the adjustment plate, an adjusting bolt is provided at the opening end of the transverse incision, the adjusting bolt passes through the through hole of the adjustment plate above the transverse incision and is connected with the threaded hole of the adjustment plate below the transverse incision, and the height and inclination of the fixed seat can be adjusted by the adjusting bolt.

[0012] The utility model discloses a grinding mechanism on the side of a workbench, which comprises a grinding wheel, a grinding motor, a grinding seat and a grinding guide rail. The grinding wheel is arranged on the sides of a left fixed seat and a right fixed seat, the grinding wheel is connected to the output shaft of the grinding motor, and the grinding motor is slidably connected to the grinding guide rail installed on the side of the workbench via the grinding seat.

[0013] The utility model has the advantages of simple structure, good grinding effect, high grinding precision, time saving and labor saving due to the adoption of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the central grinding structure of the drill bit of the utility model.

[0015] Figure 2 It is a schematic diagram of the drill end grinding structure of the utility model.

[0016] Figure 3 yes Figure 1 Enlarged view of the left and right positioning mechanisms.

[0017] Figure 4 yes Figure 2 Enlarged view of the left and right positioning mechanisms. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] As shown in the accompanying drawings, a drill bit differential grinding positioning tool is provided with a workbench 1, characterized in that the workbench 1 has a left positioning mechanism 2 and a right positioning mechanism 3, the left positioning mechanism 2 comprising a left fixed seat 4, a left front roller 5, a left rear roller 6, a left upper pressure wheel 7, a driving wheel 8, a driving wheel 9, and a driving motor 10, the left fixed seat 4 is fixed on the workbench 1, the right side of the left fixed seat 4 is respectively connected to the left front roller 5 and the left rear roller 6, the left front roller 5 and the left rear roller 6 are respectively connected to the driving wheel 8 via rollers, the driving wheel 9 is respectively synchronously driven and connected to the driving wheels 8 of the left front roller 5 and the right rear roller, and the output of the driving wheel 9 and the driving motor 10 The right positioning mechanism 3 comprises a right fixed seat 11, a right front roller 12, a right rear roller 13 and a right upper pressure wheel 14. The right fixed seat 11 is fixed on the workbench 1. The right front roller 12 and the right rear roller 13 are rotatably connected to the side of the right fixed seat 11. The right upper pressure wheel 14 is installed above the right front roller 12 and the right rear roller 13. The two ends of the drill bit are respectively placed between the roller and the pressure wheel of the left positioning mechanism 2 and between the roller and the pressure wheel of the right positioning mechanism 3 to realize positioning grinding.

[0020] Furthermore, the left positioning mechanism 2 and the right positioning mechanism 3 are connected to the workbench 1 in a sliding manner. A slide rail 15 is installed on the workbench 1. The left fixed seat 4 and the right fixed seat 11 are connected to the slide rail 15 in a sliding manner via slide seats 16 respectively.

[0021] Furthermore, the slide rail 15 is provided with a dovetail groove, and the slider is connected to a dovetail boss that matches the dovetail groove. The slider and the slide rail 15 are slidably connected via the dovetail groove and the dovetail boss.

[0022] Furthermore, the upper parts of the left fixed seat 4 and the right fixed seat 11 are respectively connected to an L-shaped support frame 17, the vertical parts of the L-shaped support frame 17 are respectively connected to the left fixed seat 4 and the right fixed seat 11, the transverse part of the L-shaped support frame 17 is connected to a pressure rod 18, the lower end of the pressure rod 18 is rotatably connected to the upper left pressure wheel 7 or the upper right pressure wheel 14, a spring 19 is sleeved on the pressure rod 18, and the upper end of the pressure rod 18 extends out of the transverse part of the L-shaped support frame 17 and is connected to the adjusting nut 20.

[0023] Furthermore, the right fixing seat 11 is provided with a socket, which is located between the right front roller 12, the right rear roller 13 and the right upper pressure wheel 14. A detachable ejector pin is inserted into the socket to hold the drill bit in place.

[0024] Furthermore, the driving wheel 9 is synchronously driven and connected with the driving wheels 8 of the left front roller 5 and the right rear roller 13 via a synchronous belt 21, and the driving motor 10 is fixed on the left fixing seat 4 via a bracket.

[0025] Furthermore, the left fixed seat 4 and the right fixed seat 11 are fixedly connected to the slide seat 16 via adjustment plates 23, respectively. A transverse cutout 22 is provided on the adjustment plate 23, and an adjusting bolt 24 is provided at the open end of the transverse cutout 22. The adjusting bolt 24 passes through the through hole of the adjustment plate 23 above the transverse cutout 22 and is connected to the threaded hole of the adjustment plate 23 below the transverse cutout 22. The height and inclination of the fixed seat can be adjusted by adjusting the bolt 24.

[0026] Furthermore, a grinding mechanism 25 is provided on the side of the workbench 1, and the grinding mechanism 25 includes a grinding wheel 26, a grinding motor 27, a grinding seat 28, and a grinding guide rail 29. The grinding wheel 26 is arranged on the sides of the left fixed seat 4 and the right fixed seat 11, and the grinding wheel 26 is connected to the output shaft of the grinding motor 27. The grinding motor 27 is slidably connected to the grinding guide rail 29 installed on the side of the workbench 1 through the grinding seat 28.

[0027] When the utility model is in use, the left end of the carbide drill is placed between the left front wheel roller, the left rear roller 6 and the left upper pressure wheel 7, and the right end of the carbide is placed between the right front roller 12, the right rear roller 13 and the right upper pressure wheel 14. The top pin supports the right end of the carbide, and then the driving motor 10 is turned on to drive the right front roller 12 and the right rear roller 13 to rotate. In this process, the carbide drill rotates synchronously. During the rotation of the carbide drill, the grinding mechanism 25 is started, and the grinding motor 27 in the grinding mechanism 25 drives the grinding wheel 26 to grind the carbide drill. Since the carbide drill is ground during the rotation process, the centering degree of the grinding is very high, and when it is necessary to grind the end of the carbide drill again, it is only necessary to move the right positioning mechanism 3, then reverse and install it on the slide rail 15 again, remove the pin, and then continue to fix the left end of the carbide drill bit on the left positioning mechanism 2, and the right end of the carbide drill bit passes through the insertion hole of the right positioning mechanism 3 and the position between the right front roller 12, the right rear roller 13 and the right upper pressure wheel 14 of the right positioning mechanism 3 and extends out, and the right end of the extended carbide drill bit is ground by the grinding mechanism 25 while the carbide drill bit rotates. The above-mentioned adjustment plate 23 is used for aligning the two ends of the drill bit, for front and back and up and down alignment, and for aligning the upper generatrix and the measuring generatrix of the carbide drill bit. Therefore, the drill bit finally obtained after grinding has high centering degree and good grinding effect. Due to the adoption of the above-mentioned structure, the utility model has the advantages of simple structure, good grinding effect, high grinding accuracy, time saving and labor saving, etc.

Claims

1. A drill bit differential grinding positioning tool, provided with a workbench, characterized in that The left positioning mechanism and the right positioning mechanism on the workbench, the left positioning mechanism comprises a left fixed seat, a left front roller, a left rear roller, a left upper pressure wheel, a driving wheel, a driving wheel, and a driving motor. The left fixed seat is fixed on the workbench, the right side surface of the left fixed seat is respectively connected to the left front roller and the left rear roller, the left front roller and the left rear roller are respectively connected to the driving wheel via rollers, the driving wheel is respectively synchronously driven and connected to the driving wheels of the left front roller and the right rear roller, the driving wheel is connected to the output shaft of the driving motor, the left front roller and the left rear roller are respectively connected to the driving wheel of the left front roller and the right rear roller, the driving wheel is connected to the output shaft of the driving motor, An upper left pressure wheel is installed above the roller, and the driving wheel is driven to rotate through the active wheel to finally drive the left front roller and the left rear roller to rotate synchronously. The right positioning mechanism includes a right fixed seat, a right front roller, a right rear roller, and a right upper pressure wheel. The right fixed seat is fixed on the workbench, and the right front roller and the right rear roller are rotatably connected to the side of the right fixed seat. The upper right pressure wheel is installed above the right front roller and the right rear roller. The two ends of the drill bit are respectively placed between the roller and the pressure wheel of the left positioning mechanism and between the roller and the pressure wheel of the right positioning mechanism to achieve positioning grinding.

2. The drill bit step grinding and positioning tool according to claim 1, characterized in that The left positioning mechanism and the right positioning mechanism are connected to the workbench in a sliding manner. A slide rail is installed on the workbench. The left fixed seat and the right fixed seat are connected to the slide rail in a sliding manner via the slide seats.

3. A drill bit step grinding and positioning tool according to claim 2, characterized in that The slide rail is provided with a dovetail groove, the slider is connected with a dovetail boss matched with the dovetail groove, and the slider is slidably connected with the slide rail via the dovetail groove and the dovetail boss.

4. The drill bit step grinding positioning tool according to claim 1, characterized in that The upper parts of the left and right fixed seats are respectively connected to L-shaped support frames, the vertical parts of the L-shaped support frames are respectively connected to the left and right fixed seats, the transverse parts of the L-shaped support frames are connected to pressure rods, the lower ends of the pressure rods are rotatably connected to the upper left pressure wheel or the upper right pressure wheel, a spring is sleeved on the pressure rod, and the upper end of the pressure rod extends out of the transverse part of the L-shaped support frame and is connected to the adjusting nut.

5. The drill bit step grinding and positioning tool according to claim 1, characterized in that The right fixing seat is provided with a socket, which is located between the right front roller, the right rear roller and the right upper pressure wheel. A detachable ejector pin is inserted into the socket, and the drill bit is positioned by the ejector pin.

6. The drill bit step grinding and positioning tool according to claim 1, characterized in that The driving wheel is respectively connected with the driving wheels of the left front roller and the right rear roller through synchronous driving belts, and the driving motor is fixed on the left fixing seat through a bracket.

7. The drill bit step grinding and positioning tool according to claim 1, characterized in that The left fixed seat and the right fixed seat are fixedly connected to the sliding seat via adjustment plates respectively. A transverse incision is provided on the adjustment plate. An adjusting bolt is provided at the open end of the transverse incision. The adjusting bolt passes through the through hole of the adjustment plate above the transverse incision and is connected with the threaded hole of the adjustment plate below the transverse incision. The height and inclination of the fixed seat can be adjusted by adjusting the bolt.

8. The drill bit step grinding and positioning tool according to claim 1, characterized in that A grinding mechanism is provided on the side of the workbench, and the grinding mechanism includes a grinding wheel, a grinding motor, a grinding seat, and a grinding guide rail. The grinding wheel is arranged on the sides of the left fixed seat and the right fixed seat, and the grinding wheel is connected to the output shaft of the grinding motor. The grinding motor is slidably connected to the grinding guide rail installed on the side of the workbench through the grinding seat.

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