Micro drill point blade face grinding device

Abstract

The utility model discloses a micro drill point blade face grinding device, and relates to the technical field of drill point machining. The device comprises a base, a mounting block, a base block, a trapezoidal block and an air cylinder, the mounting block and the trapezoidal block are arranged above the base in a sliding mode, a motor is fixed to the upper end of the mounting block, a pressing roller is fixed to an output shaft of the motor, and rubber wheels distributed at equal intervals are fixed to the periphery of the pressing roller; a mounting cavity is formed in the upper end of the base block, and symmetrically-distributed rollers are further rotationally connected into the arc face in the mounting cavity in an embedded mode. And a grinding block is fixed on the trapezoidal block. By arranging the motor, the mounting block, the compression roller, the rubber wheel, the base block, the rotary drum, the magnetic strip, the trapezoidal block, the grinding block and the air cylinder, the problem that a conventional clamp tool and the like cannot clamp the small size of the micro drill point and keep rotating when the blade part of the micro drill point is ground is solved; when the grinding block is in direct contact with the edge part of the micro drill point for grinding, the control is difficult, the time is consumed and the cost is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill needle processing, in particular to a micro drill needle blade grinding device. Background Art

[0002] Micro drills are extremely fine tools that are widely used in the electronics industry, especially in the manufacturing of printed circuit boards (PCBs). These drills are usually very small in diameter. For example, some micro drills have a diameter of only 0.03 mm, which is equivalent to one-third of a hair. Due to their fine size and special design, micro drills can perform high-density drilling operations on PCBs, which is crucial to improving the performance of electronic products. Usually, when processing drills, the blade position needs to be ground to the appropriate size, but there are still the following disadvantages in the actual grinding operation:

[0003] First, before grinding the blade of a micro drill, the micro drill usually needs to be clamped in a corresponding fixture, tooling, etc., rotated, and then contacted with a corresponding grinding block for grinding. However, due to the small volume structure of the micro drill, it is difficult to stably clamp and rotate at the same time, and conventional tooling structures are not suitable.

[0004] Secondly, conventional grinding operations mostly involve directly contacting the grinding surface of the grinding block with the blade of the micro drill, and then gradually approaching the central axis of the micro drill. This process requires extremely precise control, otherwise it will cause excessive or insufficient grinding, slow grinding, and high costs. Utility Model Content

[0005] The purpose of the utility model is to provide a micro drill blade grinding device, which solves the problems that when the blade of the micro drill is ground, conventional clamps and tooling cannot clamp and keep the micro drill rotating due to its small size; and the grinding block is difficult to control when directly contacting the micro drill blade for grinding, which is time-consuming and costly.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a micro drill needle blade grinding device, comprising a base, a mounting block, a base block, a trapezoidal block and a cylinder, wherein the mounting block and the trapezoidal block are slidably arranged above the base, and a motor is fixed to the upper end of the mounting block, a pressure roller is fixed to the output shaft of the motor, and rubber wheels distributed equidistantly are fixed to the outer periphery of the pressure roller;

[0008] A base block is fixed at the upper end of the base between the mounting block and the trapezoidal block, a mounting cavity is provided at the upper end of the base block, a magnetic strip is embedded and fixed at the bottom end of the mounting cavity, and rollers symmetrically distributed are also embedded and rotatably connected in the arc surface of the mounting cavity;

[0009] A cylinder is also fixed on the base, and the cylinder is located on the side of the trapezoidal block away from the base block; a grinding block is fixed on the trapezoidal block, and a piston rod at the telescopic end of the cylinder is fixed to the end face of the grinding block.

[0010] Furthermore, a drill body is arranged in the installation cavity on the drum, and the rubber wheel and the pressure roller are located above the drill body, the outer periphery of the rubber wheel contacts the outer periphery of the drill body, and the drill body contacts the drum but does not contact the magnetic strip.

[0011] Furthermore, the portion of the drill needle body extending out of the mounting cavity is configured as a drill needle head, a grinding groove is formed at the upper end of the grinding block, and the drill needle head extends into the grinding groove.

[0012] Furthermore, a limiting plate is fixed to one end of the base block close to the mounting block, a pressure switch is fixed to one end of the base block close to the trapezoidal block, and a pressing head is fixed to one end of the trapezoidal block close to the base block.

[0013] Furthermore, a symmetrically distributed sliding block is fixed to the bottom of the mounting block, a symmetrically distributed longitudinal sliding groove is provided on the upper surface of the base below the mounting block, and the sliding block is slidably arranged in the longitudinal sliding groove.

[0014] Furthermore, a symmetrically distributed sliding block 2 is fixed to the bottom of the trapezoidal block, a symmetrically distributed transverse sliding groove is provided on the upper surface of the base below the trapezoidal block, and the sliding block 2 is slidably arranged in the transverse sliding groove.

[0015] The utility model has the following beneficial effects:

[0016] The utility model solves the problem that conventional fixtures and tools are unable to clamp and keep rotating the small size of the micro drill needle when the blade of the micro drill needle is ground by arranging a motor, a mounting block, a pressure roller, a rubber wheel, a base block, a roller and a magnetic strip. Before the grinding process of the blade of the micro drill needle, the drill needle body is placed in the mounting cavity, at which time the drill needle body is attracted by the magnetic strip but does not contact the magnetic strip, so that it will not deviate under the action of the magnetic force and contacts the roller, and then the mounting block is moved to make the rubber wheel located above the drill needle body until the rubber wheel contacts the drill needle body, and then the motor drives the pressure roller to rotate, driving the rubber wheel to rotate, so that under the action of the friction between the rubber wheel and the drill needle body, the drill needle body is also rotated, so that the positioning rotation effect can be achieved without clamping by fixtures and tools.

[0017] The utility model solves the problems of being difficult to control, time-consuming and costly when the grinding block is in direct contact with the blade of a micro drill needle for grinding by arranging a trapezoidal block, a grinding block and a cylinder. When grinding the micro drill needle, the grinding surface of the grinding block is no longer directly and completely in contact with the drill needle head (i.e., the position of the drill needle blade), but the grinding block is pushed from the outside of the drill needle head by the cylinder to slowly contact the drill needle head, thereby achieving a step-by-step grinding effect, without the need to control the grinding thickness, and the grinding is formed in one step because the central axis of the grinding groove is flush with the central axis of the drill needle head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 A three-dimensional diagram of a micro drill blade grinding device grinding a micro drill;

[0020] Figure 2 This is a structural diagram after the drill bit body is removed;

[0021] Figure 3 A structural diagram of the mounting block and the components above it;

[0022] Figure 4 is the structural diagram of the base block;

[0023] Figure 5 It is the connection diagram of the trapezoidal block and the grinding block;

[0024] Figure 6 This is a structural diagram of the base.

[0025] Reference numerals:

[0026] 1. Base; 101. Horizontal slide; 102. Longitudinal slide; 2. Mounting block; 201. Motor; 202. Pressure roller; 203. Rubber wheel; 204. Slider 1; 3. Base block; 301. Limit plate; 302. Pressure switch; 303. Mounting cavity; 304. Roller; 305. Magnetic strip; 4. Trapezoidal block; 401. Grinding block; 402. Grinding groove; 403. Pressing head; 404. Slider 2; 5. Cylinder; 6. Drill body; 601. Drill head. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] See also Figure 1-6As shown, the utility model is a micro drill blade grinding device, comprising a base 1, a mounting block 2, a base block 3, a trapezoidal block 4 and a cylinder 5. The mounting block 2 and the trapezoidal block 4 are slidably arranged above the base 1, and a motor 201 is fixed to the upper end of the mounting block 2. A pressure roller 202 is fixed to the output shaft of the motor 201, and rubber wheels 203 are fixed to the outer periphery of the pressure roller 202 at equal intervals; the motor 201 drives the pressure roller 202 and the rubber wheel 203 to rotate, so that the transmission drill body 6 rotates;

[0029] A base block 3 is fixed on the upper end of the base 1 between the mounting block 2 and the trapezoidal block 4, a mounting cavity 303 is provided on the upper end of the base block 3, and a magnetic strip 305 is embedded and fixed at the bottom end of the mounting cavity 303, and rollers 304 symmetrically distributed are also embedded and rotatably connected in the arc surface of the mounting cavity 303; the mounting cavity 303 is used to place the drill needle body 6, and the magnetic strip 305 is attracted to prevent it from shifting, and the mounting roller 304 assists in supporting the drill needle body 6 and assisting its rolling;

[0030] A drill needle body 6 is arranged in the installation cavity 303 on the roller 304, and the rubber wheel 203 and the pressure roller 202 are located above the drill needle body 6, the outer periphery of the rubber wheel 203 contacts the outer periphery of the drill needle body 6, and the drill needle body 6 contacts the roller 304 but does not contact the magnetic strip 305;

[0031] The bottom of the mounting block 2 is fixed with symmetrically distributed sliders 204, the upper surface of the base 1 below the mounting block 2 is provided with symmetrically distributed longitudinal slide grooves 102, and the sliders 204 are slidably arranged in the longitudinal slide grooves 102;

[0032] Before the grinding process of the micro drill blade, the drill body 6 is placed in the installation cavity 303 and contacts the roller 304. At this time, the drill body 6 is attracted by the magnetic strip 305 but does not contact the magnetic strip 305, so that it will not deviate under the action of the magnetic force. Then, the installation block 2 is moved, and the slider 204 at the bottom thereof slides in the longitudinal slide groove 102 until the rubber wheel 203 contacts the drill body 6. Then, the motor 201 drives the pressure roller 202 to rotate, driving the rubber wheel 203 to rotate, so that under the action of the friction between the rubber wheel 203 and the drill body 6, the drill body 6 also rotates, thereby achieving a positioning rotation effect without the need for clamping of a fixture or tooling.

[0033] A cylinder 5 is also fixed on the base 1, and the cylinder 5 is located on the side of the trapezoidal block 4 away from the base block 3; a grinding block 401 is fixed on the trapezoidal block 4, and the piston rod at the telescopic end of the cylinder 5 is fixed to the end surface of the grinding block 401;

[0034] The portion of the drill needle body 6 extending out of the mounting cavity 303 is set as a drill needle head 601, and a grinding groove 402 is formed at the upper end of the grinding block 401, and the drill needle head 601 extends into the grinding groove 402;

[0035] During the grinding process, the grinding block 401 is driven by the cylinder 5 to move close to the drill head 601 until the drill head 601 slowly enters the grinding groove 402. During this process, the rotating drill head 601 is ground by the grinding surface in the grinding groove 402.

[0036] A limit plate 301 is fixed to one end of the base block 3 close to the mounting block 2, a pressure switch 302 is fixed to one end of the base block 3 close to the trapezoidal block 4, and a pressing head 403 is fixed to one end of the trapezoidal block 4 close to the base block 3;

[0037] When the grinding block 401 contacts the drill head 601, the grinding block 401 will continuously press against the drill body 6. The limit of the limit plate 301 prevents the drill body 6 from leaving the installation cavity 303, thereby ensuring the stability of the grinding position. When the grinding block 401 moves step by step for grinding, the cylinder 5 stops working until the pressing head 403 touches the pressure switch 302, indicating that the grinding of the drill head 601 has been completed at this time.

[0038] The bottom of the trapezoidal block 4 is fixed with symmetrically distributed sliders 404, and the upper surface of the base 1 below the trapezoidal block 4 is provided with symmetrically distributed transverse slide grooves 101, and the sliders 404 are slidably arranged in the transverse slide grooves 101;

[0039] When the cylinder 5 drives the grinding block 401 , the trapezoidal block 4 moves accordingly, and slides in the transverse slide groove 101 through the second slider 404 to maintain stability.

[0040] The specific working principle of the utility model is as follows: first, assemble the micro drill that needs to be ground, place the drill body 6 in the installation cavity 303, the drill body 6 is attracted by the magnetic strip 305 but does not contact the magnetic strip 305, contacts the roller 304 and is supported by the roller 304, then move the installation block 2, and the slider 204 at the bottom thereof slides in the longitudinal slide groove 102 until the rubber wheel 203 contacts the drill body 6. At this time, the installation block 2 can be limited to a certain position so that it cannot move. Then, the motor 201 drives the pressure roller 202 to rotate, driving the rubber wheel 203 to rotate, so that the drill body 6 is also driven by the friction between the rubber wheel 203 and the drill body 6. As it rotates, the grinding block 401 is driven by the cylinder 5 to move, so that it is close to the drill head 601, until the drill head 601 slowly enters the grinding groove 402. During this process, the grinding block 401 will continuously press against the drill body 6, and the drill body 6 will not be separated from the installation cavity 303 through the restriction of the limit plate 301. The trapezoidal block 4 also moves accordingly, and it slides in the horizontal slide groove 101 through the slider 2 404 until the pressing head 403 touches the pressure switch 302, and the cylinder 5 stops working, indicating that the drill head 601 has been completely entered into the grinding groove 402 at this time, and the grinding of the drill head 601 (i.e., the drill blade position) is completed.

[0041] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A micro drill blade grinding device, comprising a base (1), a mounting block (2), a base block (3), a trapezoidal block (4) and a cylinder (5), characterized in that: A mounting block (2) and a trapezoidal block (4) are slidably disposed above the base (1), and a motor (201) is fixed to the upper end of the mounting block (2), a pressure roller (202) is fixed to the output shaft of the motor (201), and rubber wheels (203) distributed at equal intervals are fixed to the outer circumference of the pressure roller (202); A base block (3) is fixed to the upper end of the base (1) between the mounting block (2) and the trapezoidal block (4); a mounting cavity (303) is provided at the upper end of the base block (3); a magnetic strip (305) is embedded and fixed at the bottom end of the mounting cavity (303); and symmetrically distributed rollers (304) are also embedded and rotatably connected in the arc surface of the mounting cavity (303); A cylinder (5) is also fixed on the base (1), and the cylinder (5) is located on a side of the trapezoidal block (4) away from the base block (3); a grinding block (401) is fixed on the trapezoidal block (4), and a piston rod at the telescopic end of the cylinder (5) is fixed to the end surface of the grinding block (401).

2. A micro drill blade grinding device according to claim 1, characterized in that: A drill needle body (6) is arranged in the installation cavity (303) on the roller (304), and the rubber wheel (203) and the pressure roller (202) are located above the drill needle body (6), the outer periphery of the rubber wheel (203) contacts the outer periphery of the drill needle body (6), and the drill needle body (6) contacts the roller (304) but does not contact the magnetic strip (305).

3. A micro drill blade grinding device according to claim 2, characterized in that: The portion of the drill needle body (6) extending outside the mounting cavity (303) is configured as a drill needle head (601), a grinding groove (402) is formed at the upper end of the grinding block (401), and the drill needle head (601) extends into the grinding groove (402).

4. The micro drill blade grinding device according to claim 1, characterized in that: A limiting plate (301) is fixed to one end of the base block (3) close to the mounting block (2), a pressure switch (302) is fixed to one end of the base block (3) close to the trapezoidal block (4), and a pressing head (403) is fixed to one end of the trapezoidal block (4) close to the base block (3).

5. The micro drill blade grinding device according to claim 1, characterized in that: A symmetrically distributed sliding block (204) is fixed to the bottom of the mounting block (2), a symmetrically distributed longitudinal sliding groove (102) is provided on the upper surface of the base (1) below the mounting block (2), and the sliding block (204) is slidably arranged in the longitudinal sliding groove (102).

6. The micro drill blade grinding device according to claim 1, characterized in that: The bottom of the trapezoidal block (4) is fixed with symmetrically distributed sliding blocks (404), the upper surface of the base (1) below the trapezoidal block (4) is provided with symmetrically distributed transverse sliding grooves (101), and the sliding blocks (404) are slidably arranged in the transverse sliding grooves (101).

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