CN115900491A

CN115900491A - Micro-drill core thickness measuring device

Info

Publication number: CN115900491A
Application number: CN202211406261.4A
Authority: CN
Inventors: 石红雁; 刘仙文; 刁东风; 林贵林; 张昊
Original assignee: Shenzhen University
Current assignee: Shenzhen University
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-04-04

Abstract

The invention belongs to the technical field of micro-drill measurement equipment, and particularly relates to a micro-drill core thickness measuring device. The core thickness measuring device that bores a little includes: the fixed scale that sets up, connect the high adjustment mechanism who bores a little and adjoin the core thickness gauge that high adjustment mechanism and fixed set up, the scale is used for the height value that the little brill of sign, and the relative scale setting of high adjustment mechanism just is used for adjusting the height that bores a little, and the core thickness gauge measurement bores the core thickness value that corresponds the position a little. The method continuously measures the micro drill through the core thickness measuring meter, is not limited by the measurement of a fixed point, and improves the measurement range of the micro drill.

Description

Micro-drill core thickness measuring device

Technical Field

The invention belongs to the technical field of micro-drill measurement equipment, and particularly relates to a micro-drill core thickness measuring device.

Background

The development trend of modern electronic components, such as light weight, thinness, shortness, smallness and the requirement of higher and higher reliability, makes the requirements of drilling and hole position precision and hole wall quality of Printed Circuit Board (PCB) boards continuously improved. With the development of printed circuit board PCB technology and products, the demand for micro drill bits for processing printed circuit boards is increasing. A micro drill for PCB (printed Circuit Board) is a micro-hole processing tool with a plurality of spiral grooves and is derived from a traditional twist drill.

In the structural design of the PCB micro drill, the core thickness value is an important parameter influencing the rigidity and dust exhaust space of the micro drill. Therefore, the measurement of core thickness is an important step in the micro-drill manufacturing process. In the existing core thickness value measuring device, the core thickness value measurement of a limited number (generally 3) of fixed measuring stations can be carried out only on a fixed total length micro drill, the measuring mode cannot realize the core thickness measurement of a plurality of non-fixed point positions, and the measuring range is limited.

Disclosure of Invention

An object of the embodiment of this application is to provide a little thick measuring device of core, aim at solving the problem how to carry out continuous measurement and improve the measuring range to little brill.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

provided is a micro drill core thickness measuring device for measuring a micro drill, wherein the length direction of the micro drill is arranged along a vertical direction, the micro drill core thickness measuring device comprises: the height adjusting mechanism is arranged opposite to the graduated scale and is used for adjusting the height of the micro drill, and the core thickness measuring meter is used for measuring the core thickness value of the corresponding position of the micro drill.

In some embodiments, the height adjusting mechanism includes an adjusting seat and an adjusting bolt, the adjusting seat is provided with an adjusting hole, a hole wall of the adjusting hole is provided with an internal thread, one end of the adjusting bolt is screwed in the adjusting hole, and the other end of the adjusting bolt is connected to the lower end of the micro drill.

In some embodiments, the height adjustment mechanism further comprises a first scale pointer connected to a side surface of the adjustment bolt and used for indicating the height of the micro drill from the scale.

In some embodiments, the height adjustment mechanism includes a lift table connected to a lower end of the micro drill, and a driver for driving the lift table to move in a vertical direction.

In some embodiments, the height adjustment mechanism further includes a screw rod and a guide post connected to the driver, the screw rod is connected to an output shaft of the driver, the lifting table is provided with a lifting hole adapted to the screw rod, the lifting table is further provided with a guide hole, and an upper end of the guide post is slidably received in the guide hole.

In some embodiments, the height adjustment mechanism further comprises a second scale pointer, the second scale pointer being coupled to the lift table.

In some embodiments, the micro drill is provided with two micro drills, the two graduated scales are arranged at intervals, the two graduated scales are respectively used for representing the heights of the two micro drills, and the lengths of the two micro drills are not equal.

In some embodiments, the two graduated scales are vertically offset.

In some embodiments, the micro-coring thickness measuring device further comprises a support table, and the graduated scale is connected to the support table.

In some embodiments, the support platform includes a bottom plate and a vertical plate, the vertical plate is connected to the support platform in a lifting manner, and the graduated scale is connected to the surface of the vertical plate facing the micro drill.

The beneficial effect of this application lies in: the micro drill core thickness measuring device comprises a scale ruler, a height adjusting mechanism and a core thickness measuring meter, the micro drill is placed in the height adjusting mechanism, and the height adjusting mechanism can continuously adjust the height of the micro drill, so that the core thickness measuring meter can continuously measure the micro drill, the micro drill core thickness measuring device is not limited by the measurement of a fixed point, and the measuring range of the micro drill is enlarged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a micro drill core thickness measuring device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a micro drill core thickness measuring device according to another embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

100. a micro drill core thickness measuring device; 101. a base; 102. a reference plane; 200. a height adjustment mechanism; 201. an adjusting seat; 2011. an adjustment hole; 202. adjusting the bolt; 203. a first scale pointer; 204. fixing a nut; 205. adjusting the nut; 206. a transfer arm; 207. a lifting platform; 208. a screw rod; 209. a second scale pointer; 210. a guide post; 211. a driver; 212. a power source; 401. a support arm; 400. a core thickness gauge; 500. micro-drilling; 301. a graduated scale; 302. a support table; 3021. a base plate; 3022. a vertical plate; 301', a first graduated scale; 302", second graduated scale.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and operate, and thus are not to be construed as limiting the present application, and the specific meanings of the above terms may be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1, an embodiment of the present application provides a micro drill core thickness measuring apparatus 100 for measuring a micro drill 500, wherein the micro drill 500 is used for drilling a circuit board. In the process of measuring the core thickness value, the length direction of the micro drill 500 is arranged along the vertical direction, and the micro drill core thickness measuring device 100 can measure the core thickness value of any position of the micro drill 500.

Referring to fig. 1 and 2, the micro core thickness measuring device 100 includes: a fixedly arranged scale 301, a height adjusting mechanism 200 connected with the micro drill 500 and a core thickness measuring meter 400 fixedly arranged adjacent to the height adjusting mechanism 200. The graduated scale 301 is used for the sign the height value of microdriller 500, height adjustment mechanism 200 is relative graduated scale 301 sets up, and is used for adjusting the height of microdriller 500. It is understood that the lower end of the micro drill 500 is placed on the surface of the height adjustment mechanism 200 facing upward, and the height adjustment mechanism 200 can drive the micro drill 500 upward to increase the height of the micro drill 500 relative to the core thickness gauge 400, or the height adjustment mechanism 200 can drive the micro drill 500 downward to decrease the height of the micro drill 500 relative to the core thickness gauge 400. The core thickness meter 400 is fixedly disposed through a supporting arm 401, for example, the graduated scale 301 and the height adjusting mechanism 200 are both disposed on the same reference surface 102 of the base 101, the supporting arm 401 supporting the core thickness meter 400 is also connected to the base 101, and after the height adjusting mechanism 200 adjusts the height of the micro drill 500 to a proper position, the core thickness meter 400 measures the core thickness value of the corresponding position of the micro drill 500. It can be understood that the graduated scale 301 is used for measuring the adjustment amount of the height adjustment mechanism 200 for the height of the micro drill 500, and according to the actual situation, the height of the micro drill 500 can be continuously adjusted within the adjustment range of the height adjustment mechanism 200, so that the core thickness measuring meter 400 can continuously measure the core thickness value of the micro drill 500.

The application provides a little bore thick measuring device of core 100 includes scale 301, height adjusting mechanism 200 and thick gauge 400 of core, and little drill 500 places in height adjusting mechanism 200, and height adjusting mechanism 200 can carry out continuous adjustment to the height of boring 500 a little to make thick gauge 400 of core carry out continuous measurement to boring 500 a little, be not limited to the measurement of fixed point, improved the measuring range who bores 500 a little.

It will be appreciated that zero calibration of the graduated scale 301 is required prior to actual measurement. The diameter of the shank of the micro drill 500 is classified into two major categories, namely 3.175 for the shank diameter and 2.0 for the shank diameter. Taking the micro drill 500 with the handle diameter of 2.0 as an example, the drill handle with the handle diameter of 2.0 is firstly placed on the height adjusting mechanism 200, the drill bit of the micro drill 500 is arranged upwards and extends towards the pointer of the core thickness measuring meter 400, and the position (height) of the height adjusting mechanism 200 is adjusted through the pulse controller, so that the pointer of the core thickness measuring meter 400 is just clamped at the drill tip position of the micro drill 500 at the moment, and the scale position of the scale 301 pointing to the handle diameter of 2.0 is the zero point position of the scale. In the measuring process, the measuring position of the micro drill 500 can be obtained through conversion only by acquiring the scale of the scale 301 pointing to the micro drill 500. Through the scale of the micro drill 500 pointed by the scale ruler 301, the position of the micro end measured by the core thickness measuring gauge 400 can be directly obtained, or the micro end moves for a preset distance through the height adjusting mechanism 200, so that the measurement of the designated position of the micro drill 500 is realized, and the measurement convenience is improved.

Referring to fig. 1, in some embodiments, the height adjusting mechanism 200 includes an adjusting seat 201 and an adjusting bolt 202, the adjusting seat 201 is provided with an adjusting hole 2011, a hole wall of the adjusting hole 2011 is provided with an internal thread, one end of the adjusting bolt 202 is screwed into the adjusting hole 2011, and the other end of the adjusting bolt 202 is connected to the lower end of the micro drill 500, it can be understood that the adjusting bolt 202 is manually rotated, so that the adjusting bolt 202 moves up and down along the hole depth direction of the adjusting hole 2011, the height of the micro drill 500 is adjusted, the height of the micro drill 500 can be adjusted without using other tools, and convenience in use is improved.

Referring to fig. 1, optionally, the upper end surface of the adjusting bolt 202 is provided with a positioning hole, the shape of the positioning hole is adapted to the shape of the lower end of the micro drill 500, so that the lower end of the micro drill 500 can be inserted and positioned in the positioning hole, and the positioning hole is a linear hole, so that the length direction of the micro drill 500 is arranged along the vertical direction, and the accuracy of measuring the core thickness value of the micro drill 500 is improved.

Referring to fig. 1, in some embodiments, the height adjustment mechanism 200 further includes a first scale pointer 203, and the first scale pointer 203 is connected to a side surface of the adjustment bolt 202 and is used for indicating the height of the micro drill 500 from the scale 301.

Referring to fig. 1, optionally, the first scale indicator 203 is ring-shaped, so that after the adjusting bolt 202 rotates any angle, the scale indicating the height of the micro drill 500 on the scale 301 can be indicated.

Referring to fig. 1, optionally, an adjusting nut 205 and a fixing nut 204 are disposed at an upper end of the adjusting bolt 202, the first scale pointer 203 is clamped between the adjusting nut 205 and the fixing nut 204, and a lower end of the micro drill 500 abuts against the adjusting nut 205, so that the adjusting bolt 202 can be driven to rotate by rotating the adjusting nut 205.

Referring to fig. 2, in some embodiments, the height adjustment mechanism 200 includes a lifting table 207 and a driver 211, the lifting table 207 is connected to a lower end of the micro drill 500, and the driver 211 is configured to drive the lifting table 207 to move in a vertical direction.

Alternatively, the driver 211 is a servo motor, which is an engine controlling the operation of mechanical elements in a servo system, and is an indirect transmission device with a supplementary motor. The servo motor can control the speed, the position precision is very accurate, and a voltage signal can be converted into torque and rotating speed to drive a control object. The servo motor has rotor speed controlled by the input signal and fast response, and may be used as the executing element in automatic control system, and has the features of small electromechanical time constant, high linearity, etc. the servo motor can convert the received electric signal into angular displacement or angular speed of the motor shaft for output. The servo motor is divided into two categories of direct current servo motors and alternating current servo motors, and is mainly characterized in that when the signal voltage is zero, the signal voltage has no autorotation phenomenon, and the rotating speed is reduced at a constant speed along with the increase of the torque. In other embodiments, the actuator 211 may also be an air cylinder or an oil cylinder, which is not limited herein and may be selected according to actual situations.

The elevating platform 207 is driven by the servo motor to move a predetermined position in the vertical direction, thereby realizing the height adjustment of the micro drill 500. It can be understood that the transmission of power between the servo motors can be realized through a gear structure, which is not limited herein and can be selected according to actual situations.

Referring to fig. 2, in some embodiments, the height adjustment mechanism 200 further includes a screw rod 208 and a guide post 210 connected to the driver 211, the screw rod 208 is connected to an output shaft of the driver 211, the lifting platform 207 is provided with a lifting hole in threaded fit with the screw rod 208, the lifting platform 207 is further provided with a guide hole, and an upper end of the guide post 210 is slidably received in the guide hole.

It can be understood that the driver 211 drives the screw rod 208 to rotate, the guide posts 210 are matched with the guide holes to prevent the lifting platform 207 from rotating along with the screw rod 208 and convert the rotation motion of the screw rod 208 into the up-and-down linear motion of the lifting platform 207, and the guide posts 210 are matched with the guide holes to improve the up-and-down movement stability of the lifting platform 207.

Optionally, the height adjustment mechanism 200 further comprises an adapter arm 206, and the adapter arm 206 is rotatably connected to the free end of the screw 208 to improve the stability of the rotation of the screw 208.

Referring to fig. 2, optionally, the height adjusting mechanism 200 further includes a power source 212, wherein the power source 212 is used for supplying power to the driver 211 and electrically connected to the driver 211. It is understood that the power source 212 may be a rechargeable power source 212 or a commercial power source, which is not limited herein and may be selected according to the actual situation.

Referring to fig. 2, in some embodiments, the height adjustment mechanism 200 further includes a second calibrated pointer 209, and the second calibrated pointer 209 is connected to the lifting platform 207. The height of the microdrill 500 may be indicated from the graduated scale 301 by the second graduated pointer 209. After the micro drill 500 is moved into position, the position of the micro drill 500 measured by the core thickness gauge 400 can be directly obtained by the second scale pointer 209.

In some embodiments, there are two microdrillers 500, two graduated scales 301 are arranged at intervals, the two graduated scales 301 are respectively used for representing the heights of the two microdrillers 500, and the lengths of the two microdrillers 500 are not equal.

Referring to fig. 1 and fig. 2, optionally, the lengths of the two microdrills 500 are 38.15mm and 31.8mm, respectively, the two graduated scales 301 are used for representing the heights of the two microdrills 500, in the use process, the two graduated scales 301 are respectively a first graduated scale 301 'and a second graduated scale 301", the two microdrills 500 are respectively a first microdrill and a second microdrill, the first graduated scale 301' is used for representing the height of the first microdrill, and the second graduated scale 301" is used for representing the height of the second microdrill. When the first micro drill is placed on the height adjusting mechanism 200, we can quickly know the measurement position of the core thickness gauge 400 on the first micro drill by observing the first graduated scale 301'. Similarly, when the second micro drill is placed on the height adjustment mechanism 200, we can quickly know the measurement position of the second micro drill by the core thickness gauge 400 by observing the second graduated scale 301 ″. When the micro drill 500 with two lengths is switched to be measured, zero calibration is not required to be carried out on the scale 301 again, and the core thickness value can be measured only by selecting the corresponding scale 301 according to the corresponding micro drill 500, so that the measurement efficiency is improved.

It is understood that the graduated scale 301 may be provided with three or more than three so as to adapt to the lengths of the micro drills 500 of different kinds, which are not limited herein and can be selected according to actual situations.

Referring to fig. 1 and fig. 2, in some embodiments, the two graduated scales 301 are disposed in a staggered manner along the vertical direction, so as to respectively represent heights of the microdrills 500 with two different lengths, and the staggered graduated scales 301 are also beneficial to visual distinction of human eyes, so as to quickly distinguish the graduated scales 301 corresponding to the different microdrills 500.

In some embodiments, the apparatus 100 further comprises a support 302, the graduated scale 301 is connected to the support 302, and the graduated scale 301 can be fixedly disposed through the support 302.

Referring to fig. 1 and fig. 2, in some embodiments, the support platform 302 includes a bottom plate 3021 and an upright plate 3022, the upright plate 3022 is connected to the support platform 302 in a lifting manner, and the graduated scale 301 is connected to the upright plate 3022 facing the surface of the micro drill 500.

Referring to fig. 1 and fig. 2, it can be understood that a sliding hole is formed in the bottom plate 3021, a sliding column is arranged on the vertical plate 3022, a free end of the sliding column is inserted into the sliding hole in a sliding manner, and after the sliding column slides in place along the vertical direction, the sliding column is fixed, so that the height of the vertical plate 3022 is adjusted, and the height of the graduated scale 301 is adjusted to adapt to the micro drills 500 with different lengths.

Alternatively, a sliding groove may be formed in the vertical plate 3022 along the vertical direction, the graduated scale 301 is slidably received in the sliding groove, the graduated scale 301 slides a predetermined distance along the vertical direction, and after the graduated scale is slid in place, the position of the graduated scale 301 is fixed, so as to adjust the height of the graduated scale 301.

The above are merely alternative embodiments of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A micro drill core thickness measuring device for measuring a micro drill, wherein the length direction of the micro drill is arranged along the vertical direction, the micro drill core thickness measuring device comprising: the height adjusting mechanism is arranged opposite to the graduated scale and is used for adjusting the height of the micro drill, and the core thickness measuring meter is used for measuring the core thickness value of the corresponding position of the micro drill.

2. The micro-drill core thickness measuring device of claim 1, wherein: the height adjusting mechanism comprises an adjusting seat and an adjusting bolt, the adjusting seat is provided with an adjusting hole, the hole wall of the adjusting hole is provided with an internal thread, one end of the adjusting bolt is screwed in the adjusting hole, and the other end of the adjusting bolt is connected with the lower end of the micro drill.

3. The micro-drill thickness measuring device of claim 2, wherein: the height adjusting mechanism further comprises a first scale pointer which is connected with the side surface of the adjusting bolt and used for indicating the height of the micro drill from the scale.

4. The micro-drill thickness measuring device of claim 1, wherein: the height adjusting mechanism comprises a lifting table and a driver, the lifting table is connected with the lower end of the micro drill, and the driver is used for driving the lifting table to move along the vertical direction.

5. The micro-drill thickness measuring device of claim 4, wherein: the height adjusting mechanism further comprises a screw rod and a guide post connected with the driver, the screw rod is connected with an output shaft of the driver, the lifting platform is provided with a lifting hole matched with the screw rod in a threaded manner, the lifting platform is further provided with a guide hole, and the upper end of the guide post is slidingly accommodated in the guide hole.

6. The micro-drill thickness measuring device of claim 5, wherein: the height adjusting mechanism further comprises a second scale pointer, and the second scale pointer is connected with the lifting platform.

7. The micro-drill core thickness measuring device of any of claims 1-6, wherein: the micro drill is provided with two micro drills, the two scale scales are arranged at intervals and are used for representing the heights of the two micro drills respectively, and the lengths of the two micro drills are unequal.

8. The micro-drill thickness measuring device of claim 7, wherein: the two scale rulers are arranged along the vertical direction in a staggered mode.

9. The micro-drill thickness measuring device of any of claims 1-6, wherein: the device for measuring the thickness of the micro drill core further comprises a supporting table, and the scale ruler is connected with the supporting table.

10. The micro-drill thickness measuring device of claim 9, wherein: the supporting platform comprises a bottom plate and a vertical plate, the vertical plate is connected with the supporting platform in a lifting mode, and the graduated scale is connected with the vertical plate and faces the surface of the micro drill.