CN214446912U

CN214446912U - Cutter head

Info

Publication number: CN214446912U
Application number: CN202022702078.1U
Authority: CN
Inventors: 陈智峰; 张辉
Original assignee: Shenzhen Jinzhou Precision Technology Corp
Current assignee: Shenzhen Jinzhou Precision Technology Corp
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-10-22
Anticipated expiration: 2030-11-20

Abstract

The utility model is suitable for a PCB board processing technology field provides a blade disc, including the blade disc body, the blade disc body is provided with a plurality of mounting holes, the mounting hole includes location section and erection section, the location section is located the top of erection section, the diameter of location section is greater than the diameter of erection section, the location section with the erection section is connected the face connection, just the length proportion that the mounting hole has multiple different location sections and erection section. The utility model provides a cutter head can cooperate with the drill point that has the round platform structure, need not to use the lantern ring just can fix a position the drill point for the drill handle of drill point exposes the outer length of cutter head mounting hole and can satisfy the requirement of snatching of drilling equipment.

Description

Cutter head

Technical Field

The utility model belongs to the technical field of the PCB board processing, especially, relate to a blade disc.

Background

With the development of Printed Circuit Boards (PCBs) toward miniaturization, lightness and thinness, the line width and line distance of the PCB lines become narrower and narrower, and manufacturers have higher and higher requirements for the position precision and drilling quality of drilling processing.

In the drilling process, the miniature drill point needs to be inserted on the cutter head upside down, and the lengths of the drill points with different edge lengths exposed out of the cutter head are different. This can make the main shaft pick up the drill point after, drill point height is inconsistent, leads to the machine to report to the police.

The lengths of the drill points with different blade lengths exposed out of the cutter head part can be ensured to be consistent by using the lantern ring for auxiliary positioning, as shown in fig. 5, a lantern ring 5 is sleeved at a preset position of the drill point handle part, the drill point 1a with the existing structure is firstly accommodated in the cutter head 4a, and the drill point 1a with the existing structure is grabbed from the cutter head 4a by the drilling equipment. The cutter head 4a is a component for accommodating a drill point, the cutter head 4a is provided with a mounting hole 41a, the upper end of the mounting hole 41a is provided with a counter bore 43a, and the aperture of the counter bore 43a is larger than that of the mounting hole 41 a. When the drill bit 1a of the prior art structure sleeved with the collar 5 is inserted into the mounting hole 41a, the collar 5 falls into the counterbore 43a at the upper end of the mounting hole 41a, namely, the collar 5 and the counterbore 43a are used for positioning, but a series of problems are caused:

1. the position accuracy of the collar is poor. This affects the vertical positioning accuracy of the spindle, resulting in a drill-through plate or a broken needle. For example, when a 5G communication board with high frequency, high speed and high interconnection is processed, the whole board is scrapped due to broken pins or deviated holes, and the production cost is greatly increased.

2. The material and the shape of the lantern ring are not uniform. When the drill bit rotates at a high speed, the collar made of uneven materials can increase the rotational inertia fluctuation of the drill bit, so that the vibration of the drill bit is aggravated, the deviation of a drilling drop point is increased, and the phenomena of poor machining such as obvious deviated holes and poor hole site precision are generated.

3. The upper and lower collars require specialized machinery and operators, and additional expense to purchase the collars results in increased drilling costs.

Based on the current situation, a cutter head with different positioning hole depths needs to be designed, the cutter head can enable drill bits with different blade lengths to be exposed out of the cutter head in the same length without matching with a lantern ring, and the cutter head can be applied to various machine tools and is good in universality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving one of above-mentioned technical problem at least, provide a blade disc, can with the drill point cooperation that has the round platform, need not to use the lantern ring just can fix a position the drill point for the drill handle of drill point exposes the outer length of blade disc mounting hole and can satisfy the requirement of snatching of drilling equipment.

The technical scheme of the utility model is that: the utility model provides a cutter head, includes the cutter head body, the cutter head body is provided with a plurality of mounting holes, the mounting hole includes location section and installation section, the location section is located the top of installation section, the diameter of location section is greater than the diameter of installation section, the location section with the installation section is connected through connecting the face, just the mounting hole has the length ratio of multiple different location sections and installation section.

Optionally, the angle between the connecting surface and the horizontal plane is 0-85 °.

Optionally, a plurality of the mounting holes are arranged in an array.

Optionally, the mounting holes include a first mounting hole, a second mounting hole and a third mounting hole, and the length ratios of the positioning section and the mounting hole section in the first mounting hole, the second mounting hole and the third mounting hole are sequentially increased.

Optionally, the cutter head body is made of a metal material.

Optionally, the cutter head body is made of plastic.

The utility model provides a cutter head, when the mounting hole of this cutter head is packed into to the drill point that has the round platform structure, it uses to need not to cooperate the lantern ring, can directly utilize the connecting face in the mounting hole to realize the location with the round platform line face contact of drill point, make the drill handle of drill point expose the length outside the cutter head mounting hole and can satisfy the requirement of snatching of drilling equipment, low in use cost, and simultaneously, through the length proportion that changes positioning section and erection section in the mounting hole, can satisfy the installation of different sword length drilling, when making the cutter head is installed to the drill point of different sword lengths, its stalk portion exposes the length outside the mounting hole and keeps unanimous, thus, when drilling equipment snatchs this drill point in the automation, can hold getting of every drill point effectively and bore the precision, and then ensure the drilling precision.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a cutter head according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a mounting hole in a cutter head according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a drill point with a circular truncated cone according to an embodiment of the present invention;

FIG. 4 is a schematic view of a drill bit having a circular truncated cone in locating engagement with a cutter head;

fig. 5 is a schematic view of the drill point in locating engagement with the existing cutter head via the collar.

In the figure, 10-drill bit, 1-drill handle, 2-working part, 3-round table, 4-cutter head body, 40-mounting hole, 41-mounting section, 42 connecting surface, 43-positioning section, 401-first mounting hole, 402-second mounting hole, 403-third mounting hole, 5-lantern ring, D1-diameter of small diameter end of round table, D2-diameter of large diameter end of round table, included angle between the length of round table generatrix of alpha-transition section and the axis of drill handle, H-length of drill handle of drilling tool exposed out of mounting hole, H-distance of positioning point to upper surface of cutter head body, L3-distance of small diameter end of round table to bottom of drill handle, D-diameter of mounting section, 1 a-drill bit of existing structure, 4 a-cutter head used with lantern ring, 41 a-mounting hole used with lantern ring, 43 a-mating collar uses a counterbore in the cutter head.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention 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 invention.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed, installed, connected, or indirectly disposed and connected through intervening components and intervening structures.

In addition, in the embodiments of the present invention, if there are orientations or positional relationships indicated by "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., based on the orientations or positional relationships shown in the drawings or the conventional placement state or use state, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated structure, feature, device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The various features and embodiments described in the detailed description may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and various combinations of features/embodiments are not separately described in order to avoid unnecessary repetition in the present disclosure.

As shown in fig. 3, the drill point 10 having the circular truncated cone 3 has a structure specifically as follows: the round table 3 is arranged between the drill shank 1 and the working part 2 of the drill point 10, wherein the large-diameter end of the round table 3 is connected with the drill shank 1, the diameter d2 of the large-diameter end is smaller than or equal to the diameter of the drill shank 1, the small-diameter end of the round table 3 is directly connected with the working part 2, or the small-diameter end of the round table is connected with the working part 2 through other structures, and the diameter d1 of the small-diameter end is larger than or equal to the diameter of the working part 2.

As shown in fig. 1 and fig. 2, the embodiment of the present invention provides a cutter head, which cooperates with a drill point 10 having a circular table 3, and is used in the occasion with high requirement on the hole position precision in the PCB drilling process. Including cutter head body 4, cutter head body 4 is provided with a plurality of mounting holes 40, and mounting hole 40 includes location section 43 and installation section 41, location section 43 is located the top of installation section 41, the diameter of location section 43 is greater than the diameter of installation section 41, location section 43 with installation section 41 connects through connecting face 42. As shown in fig. 4, when the drill point 10 with the circular truncated cone 3 is installed in the installation hole 40 of the cutter head, the peripheral surface of the circular truncated cone 3 is in contact with one end of the connection surface 42 close to the installation section 41, and the contact part is in line-surface contact, that is, from the perspective of projection, the contact part is a point, and positioning is realized through the matching of the circular truncated cone 3 and the connection surface 42, so that the length of the drill handle 1 of the drill point 10 exposed out of the installation hole 40 of the cutter head can meet the grabbing requirement of drilling equipment; the length proportion of the positioning section 43 and the mounting section 41 in the mounting hole 40 is changed, so that when the drill pins 10 with different blade lengths are mounted in the mounting hole 40, the length H of the drill pins 10 with different blade lengths exposed out of the mounting hole 40 can be kept the same, and when drilling equipment automatically grabs the PCB drilling tool, the drilling accuracy can be effectively grasped. When the cutter head is applied to various types of drilling equipment, the structure and the size of the existing drilling equipment do not need to be changed, the cutter head is easy to upgrade and update, and when the drill point 10 with the circular truncated cone 3 is installed in the cutter head, the connecting surface 42 can be directly utilized to be positioned with the circular truncated cone 3 of the drill point 10, the cutter head does not need to be matched with the lantern ring 5 for use, and the use cost is low.

Specifically, if various parameters of the drill bit are known, such as: the distance L3 from the small-diameter end of the circular truncated cone to the bottom of the drill handle, the included angle alpha between the generatrix of the circular truncated cone and the axis of the circular truncated cone, the diameter D1 of the small-diameter end of the circular truncated cone and the diameter D (as a standard value) of the mounting section are known, and the diameter D can be obtained through a formula

The distance from the positioning point (the position where the peripheral surface of the circular truncated cone 3 contacts with one end of the connecting surface 42 close to the mounting section 41) to the upper surface of the cutter head body is calculated, namely the drill points with different lengths face each other, and the heights of the drill handles exposed out of the mounting holes 40 after the drill points with different lengths are positioned are kept consistent by adjusting the positions of the positioning points.

Alternatively, the connecting surface 42 may be angled from 0 to 85 from the horizontal.

Specifically, the included angle between the connection surface 42 and the horizontal plane may be 10 °, 15 °, 20 °, 25 °, 30 °, 40 °, 45 °, 50 °, 55 °, 60 °, 65 °, 70 °, 75 °, or 80 °, and so on.

In some embodiments, the connection surface 42 may be angled 70 ° ± 2 ° from horizontal in the example of machining.

Alternatively, the plurality of mounting holes 40 may be arranged in an array.

Optionally, the mounting hole 40 includes a first mounting hole 401, a second mounting hole 402, and a third mounting hole 403, and the length ratios of the positioning section 43 and the mounting section 41 in the first mounting hole 401, the second mounting hole 402, and the third mounting hole 403 are sequentially increased. That is, on the premise of keeping the total length of the mounting hole 40 unchanged, the length of the positioning section 43 in the first mounting hole 401 is the shortest, and the length of the positioning section 43 in the third mounting hole 403 is the longest. In practical applications, a fourth mounting hole, a fifth mounting hole, a sixth mounting hole, and the like can also be included.

Specifically, as shown in fig. 1, the cutter head body 4 is a rectangular structure, a plurality of mounting holes 40 which are distributed along the length direction of the cutter head body 4 and located on the same straight line are defined as a row, and a plurality of mounting holes 40 which are distributed along the width direction of the cutter head body 4 and located on the same straight line are defined as a column. In some embodiments, any two adjacent mounting holes in the same row have the same size, and any two adjacent mounting holes in the same column have different sizes, for example, the first row may be the first mounting hole 401, the second row may be the second mounting hole 402, and the third row may be the third mounting. Or, any two adjacent mounting holes in the same row have different sizes, and any two adjacent mounting holes in the same column have the same size, for example, the first column may be all the first mounting holes 401, the second column may be all the second mounting holes 402, and the third column may be all the third mounting holes 403. It is understood that the first mounting holes 401, the second mounting holes 402 and the third mounting holes 403 may have other distribution patterns.

For example, the distribution of the first, second, and

third mounting holes

401, 402, and 403 may be distributed according to a specific processing order, thereby facilitating the drilling process.

Specifically, the depths of the first mounting hole 401, the second mounting hole 402 and the third mounting hole 403 may be 10mm to 30 mm.

In some embodiments, the first, second, and

third mounting holes

401, 402, and 403 may each have a depth of 10 mm.

Optionally, the cutter head body 4 may be made of a metal material, or the cutter head body 4 may be made of plastic, and specifically, the cutter head may be manufactured by an injection molding process.

The embodiment of the utility model provides a cutter head, when the mounting hole 40 of this cutter head is packed into to drill point 10 that has round platform structure 3, need not to cooperate lantern ring 5 to use, can directly utilize the interior 3 line face contacts of round platform of connecting face 42 and drill point 10 of mounting hole 40 to realize the location, make drill handle 1 of drill point 10 expose the part outside cutter head mounting hole 40 and can satisfy the requirement, use cost is low, and simultaneously, through the length proportion that changes interior positioning section 43 of mounting hole 40 and mounting section 41, can satisfy the installation of different sword length drilling, when making the cutter head installed to the drill point 10 of different sword lengths, its stalk portion exposes the length H outside mounting hole 40 and keeps unanimous, like this, when drilling equipment is grabbing this PCB drilling tool automatically, can hold the brill precision of getting of every drill point 10 effectively, and then ensure the drilling precision.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. The utility model provides a cutter head, includes the cutter head body, its characterized in that, the cutter head body is provided with a plurality of mounting holes, the mounting hole includes location section and installation section, the location section is located the top of installation section, the diameter of location section is greater than the diameter of installation section, the location section with the installation section is connected through connecting the face, just the mounting hole has the length ratio of multiple different location sections and installation section.

2. A cutter head according to claim 1, wherein said joint face is angled from 0 ° to 85 ° from the horizontal.

3. The cutter head of claim 1 wherein a plurality of said mounting holes are arranged in an array.

4. The cutter head of claim 3, wherein said mounting holes comprise a first mounting hole, a second mounting hole and a third mounting hole, and the length ratio of the positioning section and the mounting hole section in said first mounting hole, said second mounting hole and said third mounting hole is increased in sequence.

5. The cutterhead of claim 1, wherein the cutterhead body is made of a metal material.

6. The cutter head of claim 1 wherein said cutter head body is made of plastic.