CN209408120U

CN209408120U - A kind of singlechip chip semi-finished product edge sanding burr machine

Info

Publication number: CN209408120U
Application number: CN201822143395.7U
Authority: CN
Inventors: 沈炜东
Original assignee: Quannan Godson Semiconductor Co Ltd
Current assignee: Quannan Godson Semiconductor Co Ltd
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2019-09-20
Anticipated expiration: 2028-12-19

Abstract

The utility model relates to the technical fields of chip polishing auxiliary equipment, can be convenient and are fixed when semi-finished product are polished more particularly to a kind of singlechip chip semi-finished product edge sanding burr machine, improve the practicality；And the scrap fallen on bottom plate can conveniently be collected cleaning, improve it and use spatter property；It further include motor, driving column and grinding disc including top plate and bottom plate and side plate；Further include transmission shaft, first set spring, the first telescopic tube, left clamp and right clamping plate, further includes right support plate, handle, connection frame and connecting column；It further include accepting case, upper limit circle and lower limit circle, it accepts case and is mounted on bottom plate top, it accepts case and is internally provided with undertaking chamber, it accepts case top and is provided with and communicated with birdsmouth, birdsmouth is located at immediately below grinding disc, lower limit snare dress, which is fixed on, to be accepted above case lateral wall, and upper limit snare is above undertaking case lateral wall, upper limit circle bottom end and lower limit circle tip contact.

Description

A kind of singlechip chip semi-finished product edge sanding burr machine

Technical field

The utility model relates to the technical field of chip polishing auxiliary equipment, more particularly to a kind of singlechip chip half at Product edge sanding burr machine.

Background technique

It is well known that singlechip chip semi-finished product edge sanding burr machine is that one kind was produced and processed for singlechip chip Cheng Zhong carries out sanding burr to semi-finished product edge, it is made more preferably to carry out the auxiliary device of following process, in the neck of chip polishing It is widely used in a variety of applications in domain；Existing singlechip chip semi-finished product edge sanding burr machine includes top plate and bottom plate and side plate, It is connect on the left of the top of side plate and top plate bottom end, the bottom end of side plate is connect with bottom plate top, further includes motor, driving column and polishing Piece, motor are mounted on top plate top, and transmission top end is connect with motor bottom output end, and driving column bottom end passes through top plate side wall And extend out to below top plate, grinding disc is mounted on driving column bottom end；Existing singlechip chip semi-finished product edge sanding burr machine In use, hand-held semi-finished product, and drive the grinding disc on driving column to carry out contact polishing to its edge burr by motor, Scrap is fallen on bottom plate top, and motor is the common electrical part in market, only need to be according to the operation instruction bought back together when buying back use Book electrical connection alternating current can be carried out using therefore details are not described herein；Existing singlechip chip semi-finished product edge sanding burr machine It is found in use, when semi-finished product are polished, cannot conveniently be fixed, cause the practicality poor；And it falls on bottom plate Scrap cannot conveniently be collected cleaning, cause its using spatter property it is poor.

Utility model content

In order to solve the above technical problems, can be convenient and be fixed when the utility model provides a kind of its semi-finished product polishing, Improve the practicality；And the scrap fallen on bottom plate can conveniently be collected cleaning, improve its list for using spatter property Piece machine core piece semi-finished product edge sanding burr machine.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, including top plate and bottom plate and side plate, also Including motor, driving column and grinding disc, motor is mounted on top plate top, and transmission top end connect with motor bottom output end, passes Dynamic column bottom end passes through top plate side wall and extend out to below top plate, and grinding disc is mounted on driving column bottom end；It further include transmission shaft, A set of spring, the first telescopic tube, left clamp and right clamping plate, first set spring right end and left end are driven axis connection, first set spring left end It being connect with right clamping plate, the first telescopic tube right end is connect with transmission shaft left end, and the first telescopic tube left end is connect with right clamping plate, the A set of spring is sleeved on the outside of the first telescopic tube, further includes right support plate, handle, connection frame and connecting column, right support plate installation On the right side of bottom plate top, transmission shaft right end is passed through on the left of right support plate and is extend out on the right side of right support plate, and handle is mounted on connection On frame；Further include accepting case, upper limit circle and lower limit circle, accepts case and be mounted on bottom plate top, undertaking case, which is internally provided with, to be held Chamber is connect, case top is accepted and is provided with and communicated with birdsmouth, birdsmouth is located at immediately below grinding disc, and lower limit snare dress is fixed on undertaking Above case lateral wall, upper limit snare is above undertaking case lateral wall, upper limit circle bottom end and lower limit circle tip contact.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, connecting column include second set of spring and the Two telescopic tubes, second set of spring left end are connect with transmission shaft right end, and second set of spring right end is connect with connection frame left end, and second can stretch Draw left end is connect with transmission shaft right end, and the second telescopic tube right end is connect with connection frame left end, and second set of spring is sleeved on second It further include annular magnet plate on the outside of telescopic tube, annular magnet plate is rotatably sleeved on the outside of transmission shaft, and annular inhales iron Slabstone is mounted on the right side of right support plate, is provided with iron plate on connection frame, iron plate is adsorbed at annular magnet plate.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, further includes left support plate and shaft, Left support plate right side central is provided with rotation slot, and shaft left end is provided with rotatable lamella, and rotatable lamella is located inside rotation slot, and rotates Piece can relatively rotate slot rotation, and shaft right end is connect with left clamp.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, side plate includes adjustable column and adjusting Pipe, the bottom end of adjustable column are inserted into inside regulation pipe top, are further included upper squeezing rod, are squeezed spring and lower squeezing rod, upper extruding Column is mounted on the bottom end of adjustable column, and the top for squeezing spring is connect with upper squeezing rod, and the bottom end and lower squeezing rod for squeezing spring connect It connects, lower squeezing rod is mounted on the interior downside wall of regulation pipe, is provided with pulley blocks, and two groups of pulley components on the outside of two groups of adjustable columns It is not adjacent to the inner sidewall of two groups of regulation pipes, is connect on the left of the top and top plate bottom end of adjustable column, the bottom end of regulation pipe and base top End connection, left support plate are mounted on the right side of regulation pipe.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, further includes two groups of bradyseism plates, two groups Bradyseism spring and two groups of bradyseism blocks, two groups of bradyseism board bottom ends are connect with top plate top left and right side respectively, two groups of bradyseism springs One end is connect on the inside of two groups of bradyseism plates respectively, and two groups of bradyseism spring other ends are connect with two groups of bradyseism blocks respectively, and motor clamps Between two groups of bradyseism blocks.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, fixing sleeve is equipped with solid on the outside of transmission shaft Fixed circle, and retainer plate is contacted with right support plate.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, left clamp and right clamping plate inner sidewall are equal It is provided with anti-slip layer, two groups of anti-slip layer contacts.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model is provided with multiple groups ventilation in grinding disc Mouthful.

Compared with prior art the utility model has the following beneficial effects: it can be by left clamp and right clamping plate to semi-finished product It is clamped, and drives right clamping plate to carry out transverse shifting by first set spring, left clamp and right clamping plate spacing is made to adapt to semi-finished product Size further facilitates semi-finished product and clamps or dismantle, and when semi-finished product are polished, can be convenient and is fixed, and improves the practicality, the One telescopic tube auxiliary first set spring is not easy torsional deformation, at the same time, it can be made to drive transmission by manual swing handle Semi-finished product on axis are rotated, more practical；And the scrap fallen can be accepted by accepting case, it is convenient clear Reason, can extract upper limit circle manually, be put into collecting bag inside case accepting, and collecting bag edge is extended undertaking case, cover Enter upper limit circle, so that convenient limit collecting bag, collecting bag can further be accepted the scrap fallen, with this Facilitate simultaneously and accept case cleaning, enable to fall the scrap on bottom plate and be conveniently collected cleaning, improves it and use spatter property.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the portion the A partial enlarged view of Fig. 1；

It is attached marked in the figure: 1, top plate；2, bottom plate；3, motor；4, driving column；5, grinding disc；6, transmission shaft；7, first set Spring；8, left clamp；9, right support plate；10, handle；11, connection frame；12, case is accepted；13, upper limit circle；14, lower limit circle； 15, second set of spring；16, annular magnet plate；17, iron plate；18, left support plate；19, shaft；20, rotatable lamella；21, adjustable column； 22, regulation pipe；23, spring is squeezed；24, bradyseism plate；25, bradyseism block；26, retainer plate；27, anti-slip layer；28, ventilation opening；29, sliding Wheel group.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.

As depicted in figs. 1 and 2, a kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, including top Plate 1, bottom plate 2 and side plate, further include motor 3, driving column 4 and grinding disc 5, and motor 3 is mounted on 1 top of top plate, 4 top of driving column It is connect with 3 bottom output end of motor, 4 bottom end of driving column passes through 1 side wall of top plate and extend out to 1 lower section of top plate, and grinding disc 5 is installed In 4 bottom end of driving column；It further include transmission shaft 6, first set spring 7, the first telescopic tube, left clamp 8 and right clamping plate, first set spring 7 Right end is connect with left end transmission shaft 6, and 7 left end of first set spring is connect with right clamping plate, the first telescopic tube right end and 6 left end of transmission shaft Connection, the first telescopic tube left end are connect with right clamping plate, and it further includes right branch that first set spring 7, which is sleeved on the outside of the first telescopic tube, Fagging 9, handle 10, connection frame 11 and connecting column, right support plate 9 are mounted on the right side of 2 top of bottom plate, and 6 right end of transmission shaft passes through the right side 9 left side of support plate simultaneously extend out to 9 right side of right support plate, and handle 10 is mounted on connection frame 11；It further include accepting case 12, upper limit Circle 13 and lower limit circle 14 accept case 12 and are mounted on 2 top of bottom plate, accept case 12 and are internally provided with undertaking chamber, accept case 12 and push up End is provided with and communicated with birdsmouth, and birdsmouth is located at immediately below grinding disc 5, and the suit of lower limit circle 14, which is fixed on, accepts 12 lateral wall of case Top, upper limit circle 13, which is sleeved on, to be accepted above 12 lateral wall of case, 13 bottom end of upper limit circle and 14 tip contact of lower limit circle；Its Semi-finished product can be clamped by left clamp and right clamping plate, and drive right clamping plate to carry out transverse shifting by first set spring, So that left clamp and right clamping plate spacing is adapted to semi-finished dimensions, further facilitates semi-finished product and clamp or dismantle, it, can when semi-finished product are polished It is fixed with facilitating, improves the practicality, the first telescopic tube auxiliary first set spring is not easy torsional deformation, at the same time, can It is more practical to make it that the semi-finished product on transmission shaft be driven to be rotated by manual swing handle；And undertaking can be passed through Case accepts the scrap fallen, easy cleaning, can extract upper limit circle manually, is put into collecting bag inside case accepting, And collecting bag edge is extended into undertaking case, it is inserted in upper limit circle, collecting bag is limited thus convenient, collecting bag can be into One step accepts the scrap fallen, facilitates accept case cleaning at the same time, enable to fall the scrap on bottom plate and facilitate It is collected cleaning, it is improved and uses spatter property.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, connecting column include second set of 15 He of spring Second telescopic tube, second set of 15 left end of spring are connect with 6 right end of transmission shaft, and second set of 15 right end of spring and 11 left end of connection frame connect It connecing, the second telescopic tube left end is connect with 6 right end of transmission shaft, and the second telescopic tube right end is connect with 11 left end of connection frame, and second Set spring 15 is sleeved on the outside of the second telescopic tube, further includes annular magnet plate 16, annular magnet plate 16 is rotatably sleeved on 6 outside of transmission shaft, and annular magnet plate 16 is mounted on 9 right side of right support plate, is provided with iron plate 17, iron plate 17 on connection frame 11 It is adsorbed at annular magnet plate 16；It can be adsorbed on annular magnet plate prescription by iron plate, and just handle is limited, from And transmission shaft is facilitated to be fixed, at the same time, when handle needs to rotate, manual pull handle makes it move right, and makes iron Plate is no longer adsorbed with annular magnet plate, facilitates rotation, assists second while rotation by the second telescopic tube Auxiliary support Set spring is not easy torsional deformation.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, further includes left support plate 18 and shaft 19,18 right side central of left support plate is provided with rotation slot, and 19 left end of shaft is provided with rotatable lamella 20, and rotatable lamella 20 is located at rotation slot Inside, and rotatable lamella 20 can relatively rotate slot rotation, 19 right end of shaft is connect with left clamp 8；It can phase by rotatable lamella Auxiliary rotation while facilitating left clamp support fixed the design of rotation slot rotation, it is more practical.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, side plate include adjustable column 21 and adjust Pipe 22, the bottom end of adjustable column 21 are inserted into inside 22 top of regulation pipe, are further included upper squeezing rod, are squeezed spring 23 and lower extruding Column, upper squeezing rod are mounted on the bottom end of adjustable column 21, and the top for squeezing spring 23 is connect with upper squeezing rod, squeeze the bottom of spring 23 End is connect with lower squeezing rod, and lower squeezing rod is mounted on the interior downside wall of regulation pipe 22, is provided with cunning on the outside of two groups of adjustable columns 21 Wheel group 29, and two groups of pulley blocks 29 are adjacent to the inner sidewall of two groups of regulation pipes 22 respectively, the top and 1 bottom end of top plate of adjustable column 21 are left Side connection, the bottom end of regulation pipe 22 are connect with 2 top of bottom plate, and left support plate 18 is mounted on 22 right side of regulation pipe；It can pass through Staff firmly squeezes top plate, moves down grinding disc, facilitates grinding disc that can be adjacent to when polishing semi-finished product, Use reliability is improved, squeezes and under spring normal extension state is enough that motor is supported to work, the sliding of pulley blocks, which improves, adjusts The smoothness of longitudinal movement is saved, and adjustable column is made to be not easy to shake, it is vertical to vertically move.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, further includes two groups of bradyseism plates 24, two Group bradyseism spring and two groups of bradyseism blocks 25, two groups of 24 bottom ends of bradyseism plate are connect with 1 top left hand of top plate and right side respectively, and two groups slow Shake spring one end is connected on the inside of two groups of bradyseism plates 24 respectively, and two groups of bradyseism spring other ends connect with two groups of bradyseism blocks 25 respectively It connects, motor 3 is installed between two groups of bradyseism blocks 25；It can be driven by two groups of bradyseism springs and squeeze two groups of bradyseism blocks to motor Work shake carry out bradyseism, improve practicability.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, 6 outside fixing sleeve of transmission shaft are equipped with Retainer plate 26, and retainer plate 26 is contacted with right support plate 9；It can limit transmission shaft by retainer plate, make transmission shaft It is not moved to right excessively when fixed to semi-finished product, improves use reliability.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, left clamp 8 and right clamping plate inner sidewall It is provided with anti-slip layer 27, two groups of anti-slip layers 27 contact；It can improve semi-finished product fixed effect by two groups of anti-slip layers.

It is logical to be provided with multiple groups in grinding disc 5 for a kind of singlechip chip semi-finished product edge sanding burr machine of the utility model Air port 28；It can improve heat dissipation effect by multiple groups ventilation opening.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model can pass through a left side at work Clamping plate and right clamping plate clamp semi-finished product, and drive right clamping plate to carry out transverse shifting by first set spring, make left clamp and Right clamping plate spacing adapts to semi-finished dimensions, further facilitates semi-finished product and clamps or dismantle, and when semi-finished product are polished, can be convenient progress It is fixed, the practicality is improved, the first telescopic tube auxiliary first set spring is not easy torsional deformation, at the same time, can be by manual Swing handle makes it that the semi-finished product on transmission shaft be driven to be rotated, more practical；And it can be by accepting case to falling Scrap is accepted, easy cleaning, can extract upper limit circle manually, is put into collecting bag inside case accepting, and by collecting bag Edge extends undertaking case, is inserted in upper limit circle, limits thus convenient to collecting bag, and collecting bag can be further to falling Scrap accepted, facilitate at the same time accept case cleaning, enable to fall the scrap on bottom plate and be conveniently collected clearly Reason improves it and uses spatter property；Annular magnet plate prescription can be adsorbed on by iron plate, and just handle is limited, thus convenient Transmission shaft is fixed, and at the same time, when handle needs to rotate, manual pull handle makes it move right, and makes iron plate and ring Shape magnet plate no longer adsorbs, and facilitates rotation, assists second set of spring not while rotation by the second telescopic tube Auxiliary support Easy torsional deformation；The design that slot rotation can be relatively rotated by rotatable lamella facilitates left clamp support to assist turning while fixation It is dynamic, it is more practical；Can by staff firmly squeeze top plate, move down grinding disc, facilitate grinding disc half-and-half at Product can be adjacent to when polishing, and improve use reliability, squeezed and be enough that motor is supported to carry out work under spring normal extension state Make, the sliding of pulley blocks improves the smoothness for adjusting longitudinal movement, and adjustable column is made to be not easy to shake, vertical to vertically move；It can To drive the work shaking progress bradyseism for squeezing two groups of bradyseism blocks to motor by two groups of bradyseism springs, practicability is improved；It can be with Transmission shaft is limited by retainer plate, transmission shaft is moved to right excessively when fixed to semi-finished product, improves use reliability； Semi-finished product fixed effect can be improved by two groups of anti-slip layers；Heat dissipation effect can be improved by multiple groups ventilation opening.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, the installation of all components described above Mode, connection type or set-up mode are common mechanical mode, and the specific structure of its all component, model and coefficient refer to Mark is its included technology, is implemented as long as can reach the equal of its advantages, therefore is not adding to repeat.

A kind of singlechip chip semi-finished product edge sanding burr machine of the utility model, the case where not illustrating on the contrary Under, the noun of locality that " up and down, front and back inside and outside and vertical-horizontal " etc. is included in the term only represents the term to be made routinely With the orientation under state, or be those skilled in the art understand that be commonly called as, should not be seen as a limitation of this term, it is same with this When, the ordered series of numbers noun such as " first ", " second " and " third " does not represent specific quantity and sequence, is only used for the area of title Point, moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that packet The process, method, article or equipment for including a series of elements not only includes those elements, but also including being not explicitly listed Other element, or further include for elements inherent to such a process, method, article, or device.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change It also should be regarded as the protection scope of the utility model into modification.

Claims

1. a kind of singlechip chip semi-finished product edge sanding burr machine, including top plate (1), bottom plate (2) and side plate, further include motor (3), driving column (4) and grinding disc (5), motor (3) are mounted on top plate (1) top, driving column (4) top and motor (3) bottom Output end connection, driving column (4) bottom end pass through top plate (1) side wall and extend out to below top plate (1), and grinding disc (5) is mounted on Driving column (4) bottom end；It is characterized in that, further include transmission shaft (6), first set spring (7), the first telescopic tube, left clamp (8) and Right clamping plate, first set spring (7) right end are connect with left end transmission shaft (6), and first set spring (7) left end is connect with right clamping plate, and first can Telescoping tube right end is connect with transmission shaft (6) left end, and the first telescopic tube left end is connect with right clamping plate, and first set spring (7) is sleeved on It further include right support plate (9), handle (10), connection frame (11) and connecting column, right support plate (9) peace on the outside of first telescopic tube On the right side of bottom plate (2) top, transmission shaft (6) right end is passed through on the left of right support plate (9) and is extend out on the right side of right support plate (9), Handle (10) is mounted on connection frame (11)；Further include accepting case (12), upper limit circle (13) and lower limit circle (14), accepts case (12) it is mounted on bottom plate (2) top, case (12) is accepted and is internally provided with undertaking chamber, case (12) top is accepted and is provided with and communicated with undertaking Mouthful, birdsmouth is located at immediately below grinding disc (5), and lower limit circle (14) suit, which is fixed on, to be accepted above case (12) lateral wall, the upper limit Position circle (13), which is sleeved on, to be accepted above case (12) lateral wall, upper limit circle (13) bottom end and lower limit circle (14) tip contact.

2. a kind of singlechip chip semi-finished product edge as described in claim 1 sanding burr machine, which is characterized in that connecting column packet Second set of spring (15) and the second telescopic tube are included, second set of spring (15) left end is connect with transmission shaft (6) right end, second set of spring (15) Right end is connect with connection frame (11) left end, and the second telescopic tube left end is connect with transmission shaft (6) right end, the second telescopic tube right end It is connect with connection frame (11) left end, it further includes annular magnet plate that second set of spring (15), which is sleeved on the outside of the second telescopic tube, (16), annular magnet plate (16) is rotatably sleeved on the outside of transmission shaft (6), and annular magnet plate (16) is mounted on right support On the right side of plate (9), it is provided with iron plate (17) on connection frame (11), iron plate (17) is adsorbed at annular magnet plate (16).

3. a kind of singlechip chip semi-finished product edge as claimed in claim 2 sanding burr machine, which is characterized in that further include a left side Support plate (18) and shaft (19), left support plate (18) right side central are provided with rotation slot, and shaft (19) left end is provided with rotation Piece (20), rotatable lamella (20) are located inside rotation slot, and rotatable lamella (20) can relatively rotate slot rotation, shaft (19) right end and a left side Clamping plate (8) connection.

4. a kind of singlechip chip semi-finished product edge sanding burr machine as claimed in claim 3, which is characterized in that side plate includes Adjustable column (21) and regulation pipe (22), the bottom end of adjustable column (21) are inserted into inside regulation pipe (22) top, further include upper extruding Column squeezes spring (23) and lower squeezing rod, and upper squeezing rod is mounted on the bottom end of adjustable column (21), squeeze spring (23) top and Upper squeezing rod connection, the bottom end for squeezing spring (23) are connect with lower squeezing rod, and lower squeezing rod is mounted on the interior bottom of regulation pipe (22) Side wall, two groups of adjustable columns (21) outsides are provided with pulley blocks (29), and two groups of pulley blocks (29) are adjacent to two groups of regulation pipes respectively (22) inner sidewall, the top of adjustable column (21) and top plate (1) bottom end left side are connect, the bottom end and bottom plate (2) of regulation pipe (22) Top connection, left support plate (18) are mounted on the right side of regulation pipe (22).

5. a kind of singlechip chip semi-finished product edge as claimed in claim 4 sanding burr machine, which is characterized in that further include two Group bradyseism plate (24), two groups of bradyseism springs and two groups of bradyseism blocks (25), two groups of bradyseism plate (24) bottom ends respectively with top plate (1) top Left and right side connection, two groups of bradyseism spring one ends are connect on the inside of two groups of bradyseism plates (24) respectively, and two groups of bradyseism springs are another End is connect with two groups of bradyseism blocks (25) respectively, and motor (3) is installed between two groups of bradyseism blocks (25).

6. a kind of singlechip chip semi-finished product edge as claimed in claim 5 sanding burr machine, which is characterized in that transmission shaft (6) outside fixing sleeve is equipped with retainer plate (26), and retainer plate (26) is contacted with right support plate (9).

7. a kind of singlechip chip semi-finished product edge as claimed in claim 6 sanding burr machine, which is characterized in that left clamp (8) it is provided with anti-slip layer (27) with right clamping plate inner sidewall, two groups of anti-slip layer (27) contacts.

8. a kind of singlechip chip semi-finished product edge as claimed in claim 7 sanding burr machine, which is characterized in that grinding disc (5) multiple groups ventilation opening (28) are provided on.