Drill chuck jaw grinding machine tool

Abstract

The present invention discloses a drill chuck jaw grinding machine tool, comprising a machine base, a rotating mechanism, a grinding mechanism and a driving mechanism, wherein the upper end of the machine base is provided with a rotating mechanism for fixing the drill chuck, one side of the rotating mechanism is provided with a driving mechanism connected to the machine base, and the grinding mechanism is installed at the upper end of the driving mechanism, and the grinding mechanism cooperates with the rotating mechanism. The drill chuck is driven to rotate by a motor, and a grinding rod is used for automatic grinding, replacing the existing manual grinding method, which not only saves labor, but also improves grinding efficiency and processing accuracy, reduces the scrap rate, and the equipment can realize 24-hour continuous operation, increases production, and meets the needs of mass production.

Description

Technical Field

[0001] The invention relates to the technical field of drill chuck processing equipment, in particular to a drill chuck jaw grinding machine tool. Background Art

[0002] Drill chucks are one of the main accessories in the power tool industry and the machine tool industry, and are widely used in hand drills and drilling machines. The three main parameters of drill chucks are precision, clamping force, and clamping range. Precision is used to control the runout of the clamped handle tool to ensure the accuracy of the processed hole; the clamping force is to ensure that the clamped handle tool does not slip and prevent the handle tool from slipping and failing to work; the clamping range is used to control the minimum and maximum diameters of the chuck clamping tool to meet work needs. Generally, the precision requirements of the chuck used on the bench drill are higher. Under normal circumstances, the runout of the drill chuck after grinding is less than 0.30mm when the clamping test rod is 120mm away from the far end.

[0003] The inner hole grinding of the existing drill chuck is mainly done manually, which requires repeated grinding-testing-re-grinding process to meet the processing requirements. Manual grinding is labor-intensive, not only inefficient but also costly. Summary of the invention

[0004] The present invention is aimed at the above-mentioned deficiencies in the prior art and provides a drill chuck jaw grinding machine tool. The drill chuck is driven to rotate by a motor and a grinding rod is used for automatic grinding, replacing the existing manual grinding method. It not only saves labor, but also improves the grinding efficiency and processing accuracy, reduces the scrap rate, and the equipment can realize 24-hour continuous operation, increases production volume, and meets the needs of mass production.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A drill chuck jaw grinding machine comprises a machine base, a rotating mechanism, a grinding mechanism and a driving mechanism. The upper end of the machine base is provided with a rotating mechanism for fixing the drill chuck, one side of the rotating mechanism is provided with a driving mechanism connected to the machine base, the grinding mechanism is installed at the upper end of the driving mechanism, and the grinding mechanism cooperates with the rotating mechanism.

[0007] Preferably, the rotating mechanism includes a box seat, a spindle box, a spindle and a rotating motor. The box seat is installed on the upper end of the machine base. The upper end of the box seat is connected to the spindle box. The spindle is fixed by the spindle box. One end of the spindle is connected to the rotating motor through a synchronous belt. The rotating motor is connected to the spindle box through a fixing frame. The other end of the spindle is threaded with a drill chuck.

[0008] Preferably, a rotating pin and an arc-shaped sliding hole are provided at the upper end of the box seat, a connecting hole cooperating with the rotating pin is provided at the bottom of the spindle box, and bolts cooperating with the sliding hole are provided on both sides of the spindle box.

[0009] Preferably, the driving mechanism includes a first motor, a first lead screw, a second motor and a second lead screw, the first lead screw is arranged at the upper end of the machine base, one end of the first lead screw is connected to the first motor, first linear slides are provided in parallel on both sides of the first lead screw, a slide is connected to the first linear slide, the lower end of the slide cooperates with the first lead screw, a second lead screw is provided at the upper end of the slide and is perpendicular to the first lead screw, one end of the second lead screw is connected to the second motor, second linear slides are provided in parallel on both sides of the second lead screw, and the grinding mechanism cooperates with the second lead screw and the second linear slide respectively.

[0010] Preferably, the grinding mechanism includes a support plate, an electric spindle, a shaft seat and a grinding rod. The upper end of the support plate is provided with a shaft seat, the electric spindle is fixed in the shaft seat, the output shaft of the electric spindle is connected to the grinding rod, and the lower end of the support plate cooperates with the second lead screw and the second linear slide rail.

[0011] Preferably, a sealing frame is provided at the upper end of the support plate, and a sealing wheel is provided on the side of the sealing frame facing the rotating mechanism.

[0012] Preferably, a dust cover connected to the machine base is provided above the first lead screw.

[0013] Preferably, a protective cover with a front opening is connected to the upper edge of the base.

[0014] Preferably, the upper end of the protective cover is an open structure.

[0015] Preferably, the protective cover comprises organic glass and a protective frame, the organic glass is fixed on all sides by the protective frame, and a bracket for fixing the protective frame is provided at the edge of the base.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention uses a motor to drive the drill chuck to rotate and uses a grinding rod for automatic grinding, replacing the existing manual grinding method. It not only saves labor, but also improves grinding efficiency and processing accuracy, reduces the scrap rate, and the equipment can achieve 24-hour continuous operation, increases production, and meets the needs of mass production.

[0018] 2. The spindle box and the box seat of the present invention can rotate, and the grinding angle of the drill chuck can be adjusted to meet the angle processing requirements of the inner hole of the drill chuck. The adjustment method is simple and easy to use.

[0019] 3. The present invention is provided with a sealing wheel, and after grinding, the sealing wheel can apply pressure to the end of the drill chuck to ensure the tightness of the fit between the chuck core of the drill chuck and the chuck shell, and ensure the firmness of the drill chuck structure.

[0020] 4. The present invention is provided with a dust cover, which can prevent debris from falling on the first lead screw and can also limit the grinding mechanism to prevent the grinding mechanism from colliding with the rotating mechanism.

[0021] 5. The protective cover of the present invention can play a protective role, and at the same time can ensure that the grinding condition of the drill chuck can be observed from all sides, ensuring processing safety, and can maximize visibility. The processing status of the machine tool can be seen all around the machine tool. The bracket and the protective frame are bolted together for easy disassembly and assembly, ensuring the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 3 is a structural schematic diagram of the driving mechanism;

[0025] Figure 4 It is a structural schematic diagram of the rotating mechanism;

[0026] Figure 5 This is a schematic diagram of the structure of the spindle box;

[0027] Figure 6 It is a structural schematic diagram of the box seat;

[0028] Figure 7 Schematic diagram of the grinding mechanism.

[0029] In the figure: 1-machine base; 101-bracket; 2-rotating mechanism; 201-box seat; 202-spindle box; 203-spindle; 204-rotating motor; 205-fixed frame; 206-synchronous belt; 207-bolt; 208-connecting hole; 209-sliding hole; 210-rotating pin; 3-protective cover; 301-plexiglass; 302-protective frame; 4-grinding mechanism; 401-support plate; 402-electric spindle; 403-axle seat; 404-sealing frame; 405-sealing wheel; 406-grinding rod; 5-driving mechanism; 501-first motor; 502-first lead screw; 503-first linear slide; 504-second motor; 505-second linear slide; 506-second lead screw; 507-slide seat; 6-dust cover; 7-drill chuck. DETAILED DESCRIPTION

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] like Figure 1-2 As shown, a drill chuck 7 jaw grinding machine tool includes a machine base 1, a rotating mechanism 2, a grinding mechanism 4 and a driving mechanism 5. The machine base 1 adopts an integrated bed high-strength HT300 cast iron, and the interior of the machine base 1 adopts a cavity structure. The rational layout meets the rigidity required by the machine tool to the maximum extent. The upper end of the machine base 1 is provided with a rotating mechanism 2 for fixing the drill chuck 7 to drive the drill chuck 7 to rotate. One side of the rotating mechanism 2 is provided with a driving mechanism 5 connected to the machine base 1. The grinding mechanism 4 is installed at the upper end of the driving mechanism 5 to achieve lateral and longitudinal azimuth adjustment. The grinding mechanism 4 cooperates with the rotating mechanism 2 to achieve grinding of the drill chuck 7.

[0032] Among them, Figure 4-6 As shown, the rotating mechanism 2 includes a box seat 201, a spindle box 202, a spindle 203 and a rotating motor 204. The box seat 201 is installed at the upper end of the machine base 1, and the upper end of the box seat 201 is connected to the spindle box 202. The spindle 203 is fixed by the spindle box 202. The outer sleeve of the spindle 203 is provided with a bearing, which is connected to the spindle box 202 through the bearing. One end of the spindle 203 is connected to the rotating motor 204 through a synchronous belt 206, and the rotating motor 204 is connected to the spindle box 202 through a fixed frame 205. The other end of the spindle 203 is threadedly matched with the drill chuck 7. The rotating motor 204 drives the spindle 203 to rotate through the synchronous belt 206. The drill chuck 7 rotates with the rotation of the spindle 203, and the grinding rod 406 is placed in the inner hole of the drill chuck 7, and the drill chuck 7 rotates to realize the grinding process. The spindle box 202 is made of HT300 gray cast iron, and the rationalized M-rib structure provides high-strength rigidity. The reinforcing ribs are rationally distributed on the side wall of the spindle box 202 to provide high stability. The spindle 203 is made of forged No. 50 steel, which can ensure that the end face runout of the spindle 203 is 0.004mm, the radial runout of the spindle 203 is 0.002mm, and the axial runout of the spindle 203 is 0.002mm during assembly, thereby ensuring the processing accuracy.

[0033] Generally, the inner hole of the drill chuck 7 is ground into a tapered structure with a small outer opening and a large inner opening. Therefore, the angle of the drill chuck 7 needs to be adjusted during the grinding process. The adjustment method is: a rotating pin 210 and an arc-shaped sliding hole 209 are provided at the upper end of the box seat 201, and a connecting hole 208 cooperating with the rotating pin 210 is provided at the bottom of the spindle box 202. Bolts 207 cooperating with the sliding hole 209 are provided on both sides of the spindle box 202. The nut of the bolt 207 is located below the sliding hole 209, and the diameter of the nut is smaller than the width of the sliding hole 209. The bolt 207 passes through the sliding hole 209 and is connected to the spindle box 202. A nut is mounted on the bolt 207 for fixing. After the spindle box 202 is rotated to adjust the angle of the drill chuck 7, the spindle box 202 is fixed by tightening the nut.

[0034] The movement of the grinding mechanism 4 is driven by the driving mechanism 5, wherein Figure 3 As shown, the driving mechanism 5 includes a first motor 501, a first lead screw 502, a second motor 504 and a second lead screw 506. The first lead screw 502 is arranged at the upper end of the machine base 1, one end of the first lead screw 502 is connected to the first motor 501, first linear guide rails 503 are arranged in parallel on both sides of the first lead screw 502, a slide seat 507 is connected to the first linear guide rail 503, the lower end of the slide seat 507 cooperates with the first lead screw 502, and the upper end of the slide seat 507 is provided with a second lead screw 506 perpendicular to the first lead screw 502, one end of the second lead screw 506 is connected to the second motor 504, and second linear guide rails 505 are arranged in parallel on both sides of the second lead screw 506. The grinding mechanism 4 cooperates with the second lead screw 506 and the second linear guide rail 505 respectively. The grinding mechanism 4 realizes lateral sliding under the drive of the first lead screw 502 and realizes longitudinal movement under the drive of the second lead screw 506.

[0035] In order to cooperate with the driving mechanism 5, as Figure 7 As shown, the grinding mechanism 4 includes a support plate 401, an electric spindle 402, a shaft seat 403 and a grinding rod 406. The upper end of the support plate 401 is provided with a shaft seat 403, the electric spindle 402 is fixed in the shaft seat 403, the output shaft of the electric spindle 402 is connected with the grinding rod 406, and the lower end of the support plate 401 cooperates with the second lead screw 506 and the second linear guide rail 505; the rotation speed of the electric spindle 402 reaches 24000 rpm, and the precision end face runout of the spindle 203 head reaches 0.02mm, providing a stable output speed of 10000 rpm during grinding. The electric spindle 402 is water-cooled to provide stable precision during grinding.

[0036] In order to further improve the matching accuracy between the chuck core and the chuck shell and ensure the tightness of the assembly, a sealing frame 404 is provided at the upper end of the support plate 401, and a sealing wheel 405 is provided on the side of the sealing frame 404 facing the rotating mechanism 2. The sealing wheel 405 is connected to the sealing frame 404 through a rotating shaft. After grinding is completed, it moves to the front end of the drill chuck 7 to support the drill chuck 7. The drill chuck 7 rotates one circle, so that the chuck shell is firmly fixed to the outside of the chuck core.

[0037] In order to protect the first lead screw 502 and prevent debris from falling on the first lead screw 502 during the grinding process, a dust cover 6 connected to the machine base 1 is provided above the first lead screw 502. The dust cover 6 can prevent debris from falling on the first lead screw 502 and at the same time can limit the grinding mechanism 4 to prevent the grinding mechanism 4 from colliding with the rotating mechanism 2.

[0038] A protective cover 3 with a front opening is connected to the upper edge of the machine base 1, and the upper end of the protective cover 3 is an open structure. The protective cover 3 includes organic glass 301 and a protective frame 302. The organic glass 301 is fixed on all sides by the protective frame 302. A bracket 101 for fixing the protective frame 302 is provided at the edge of the machine base 1, that is, the machine base 1 is protected by the organic glass 301 on all sides, which can play a protective role, and at the same time, it can ensure that the grinding condition of the drill chuck 7 can be observed from all sides, ensuring processing safety, and can maximize visibility. The processing status of the machine tool can be seen all around the machine tool. The bracket 101 and the protective frame 302 are connected by bolts 207, which are easy to disassemble and ensure the convenience of maintenance.

[0039] When in use, the drill chuck 7 to be processed is installed on the end of the main shaft 203, the main shaft box 202 is rotated, the direction of the drill chuck 7 is adjusted, the bolt 207 is tightened to fix the main shaft box 202, the driving mechanism 5 drives the grinding mechanism 4 to move, so that the grinding rod 406 is inserted into the interior of the drill chuck 7, the rotating motor 204 is started, and the drill chuck 7 is driven to rotate through the main shaft 203, friction occurs between the drill chuck 7 and the grinding rod 406, and the inner hole of the drill chuck 7 is grinded by the grinding rod 406. After grinding, the angle of the drill chuck 7 is adjusted and the grinding is continued. After the grinding is completely completed, the grinding rod 406 is withdrawn from the drill chuck 7, and the support plate 401 moves so that the sealing wheel 405 is against the end of the drill chuck 7. At this time, the main shaft 203 drives the drill chuck 7 to rotate one circle, further improving the tightness of the chuck shell and the chuck core. After completion, the grinding mechanism 4 is reset, the equipment stops, and the drill chuck 7 is replaced to repeat the above grinding steps.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A drill chuck jaw grinding machine, characterized in that: It includes a machine base, a rotating mechanism, a grinding mechanism and a driving mechanism, the upper end of the machine base is provided with a rotating mechanism for fixing a drill chuck, one side of the rotating mechanism is provided with a driving mechanism connected to the machine base, the grinding mechanism is installed at the upper end of the driving mechanism, and the grinding mechanism cooperates with the rotating mechanism; the driving mechanism includes a first motor, a first lead screw, a second motor and a second lead screw, the first lead screw is provided at the upper end of the machine base, one end of the first lead screw is connected to the first motor, first linear slides are provided in parallel on both sides of the first lead screw, a slide is connected to the first linear slide, the lower end of the slide cooperates with the first lead screw, the upper end of the slide is provided with a second lead screw perpendicular to the first lead screw, one end of the second lead screw is connected to the second motor, second linear slides are provided in parallel on both sides of the second lead screw, and the grinding mechanism cooperates with the second lead screw and the second linear slide respectively; The grinding mechanism includes a support plate, an electric spindle, a shaft seat and a grinding rod. The upper end of the support plate is provided with a shaft seat, the electric spindle is fixed in the shaft seat, the output shaft of the electric spindle is connected with a grinding rod, the lower end of the support plate cooperates with the second lead screw and the second linear slide rail, the upper end of the support plate is provided with a sealing frame, and the sealing frame is provided with a sealing wheel on the side facing the rotating mechanism; A protective cover with a front opening is connected to the upper edge of the base, the upper end of the protective cover is an open structure, the protective cover includes organic glass and a protective frame, the organic glass is fixed by the protective frame on all sides, and a bracket for fixing the protective frame is provided at the edge of the base.

2. A drill chuck jaw grinding machine tool as claimed in claim 1, characterized in that: The rotating mechanism includes a box seat, a spindle box, a spindle and a rotating motor. The box seat is installed on the upper end of the machine base. The upper end of the box seat is connected to the spindle box. The spindle is fixed by the spindle box. One end of the spindle is connected to the rotating motor through a synchronous belt. The rotating motor is connected to the spindle box through a fixing frame. The other end of the spindle is threaded with a drill chuck.

3. A drill chuck jaw grinding machine tool as claimed in claim 2, characterized in that: The upper end of the box seat is provided with a rotating pin and an arc-shaped sliding hole, the bottom of the spindle box is provided with a connecting hole matched with the rotating pin, and both sides of the spindle box are provided with bolts matched with the sliding holes.

4. A drill chuck jaw grinding machine tool as claimed in claim 1, characterized in that: A dust cover connected to the machine base is provided above the first lead screw.

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