CN111015382A

CN111015382A - Negative chamfering grinding machine tool

Info

Publication number: CN111015382A
Application number: CN201911374518.0A
Authority: CN
Inventors: 黄广智; 王盖安
Original assignee: Jiangxi Geqi Grinding Technology Co ltd
Current assignee: Jiangxi Geqi Grinding Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-04-17
Anticipated expiration: 2039-12-27
Also published as: CN111015382B

Abstract

The invention discloses a negative chamfering grinding machine tool, which belongs to the technical field of negative chamfering, and comprises a supporting seat, a Y-axis workbench, a C-axis workbench, a tool apron arranged on the C-axis workbench and used for clamping a tool to be negatively chamfered, an X-axis workbench movably arranged on the supporting seat along an X axis, and a grinding wheel mechanism arranged on the X-axis workbench and used for grinding the tool to be negatively chamfered; a Y-axis screw rod driving mechanism for driving the Y-axis workbench to move along the Y axis is arranged on the supporting seat; the Y-axis workbench is connected with a heavy hammer structure which is used for providing tension force in the Y-axis direction for the Y-axis workbench so as to eliminate lead screw gap deviation caused by lead screw gaps of the Y-axis lead screw driving mechanism. The negative chamfering grinding machine tool disclosed by the invention can realize numerical control negative chamfering processing on a tool to be subjected to negative chamfering, eliminate the lead screw gap deviation of a Y-axis lead screw driving mechanism and improve the processing precision.

Description

Negative chamfering grinding machine tool

Technical Field

The invention relates to the technical field of negative chamfering, in particular to a negative chamfering grinding machine tool.

Background

The traditional negative chamfering method of the cutter mostly adopts manual operation. In the manual operation process, the negative chamfering width is not uniform, the consistency of the negative chamfering of the same cutter is difficult to control, time is consumed, and the cutter negative chamfering process can be finished by operators with high proficiency. Meanwhile, the grinding wheel runs at a high speed, so that great potential safety hazards exist, the professional skill levels of operators are uneven, the machining quality of the cutter is not uniform, the consistency is poor, and the machining quality of the cutter is seriously influenced. And with the development of the generation, the traditional manual grinding process is less and less in the young generation, and the labor cost is higher and higher. The existing partial periphery grinding machine can perform partial negative chamfering function, but because the periphery grinding machine is high in price, the numerical control machining is difficult to realize in some small and medium-sized enterprises under the condition that the periphery grinding machine is not available.

And current grinding machine because of its workstation need remove along X axle, Y axle, and adopts lead screw and screw-nut's cooperation to realize the transmission usually, and has certain clearance between lead screw and the screw-nut: the lead screw clearance leads to when relative motion between screw-nut and lead screw, leads to appearing the lead screw clearance deviation because of the lead screw clearance for the workstation removes the not ideal enough of precision, and is especially so to the higher cutter negative chamfering processing of required precision.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a negative chamfering grinding machine tool to realize negative chamfering processing of a tool to be subjected to negative chamfering, eliminate lead screw gap deviation of a Y-axis lead screw driving mechanism and improve processing precision.

The technical scheme adopted by the invention is as follows:

the invention provides a negative chamfering grinding machine tool, which comprises a supporting seat, a Y-axis workbench, a C-axis workbench, a tool apron, an X-axis workbench and a grinding wheel mechanism, wherein the Y-axis workbench is movably arranged on the supporting seat along a Y axis; a Y-axis screw rod driving mechanism for driving the Y-axis workbench to move along a Y axis is arranged on the supporting seat; the Y-axis workbench is connected with a heavy hammer structure which is used for providing tension force in the Y-axis direction for the Y-axis workbench so as to eliminate lead screw gap deviation caused by lead screw gaps of the Y-axis lead screw driving mechanism.

As a further improvement of the scheme, the Y-axis screw driving mechanism comprises a screw nut rotatably arranged on the supporting seat, a screw matched with the screw nut, and a first driving assembly for driving the screw nut to rotate; one end of the screw rod is abutted against the Y-axis workbench, and the heavy hammer structure and the screw rod are located on the same side of the Y-axis workbench.

As a further improvement of the scheme, the first driving assembly comprises a first motor, a first belt pulley arranged on a power output shaft of the first motor, a second belt pulley arranged on the screw rod nut, and a synchronous belt arranged between the first belt pulley and the second belt pulley; the second belt wheel and the screw rod nut are coaxially arranged.

As a further improvement of this solution, the Y-axis screw driving mechanism further includes a limiting mechanism for limiting rotation of the screw.

As a further improvement of the scheme, the heavy hammer structure comprises a connecting rope, a guide piece and a balancing weight; the guide piece is arranged on the supporting seat; one end of the connecting rope is connected with the Y-axis workbench, and the other end of the connecting rope is connected with the balancing weight after passing through the guide piece; the connecting rope between the guide piece and the Y-axis workbench is parallel to the Y axis.

As a further improvement of the scheme, an ejection column is arranged on the Y-axis workbench along the Y-axis direction; one end of the screw rod, which is close to the Y-axis workbench, is abutted against the abutting column.

As a further improvement of the scheme, the Y-axis workbench comprises a plate part and a shell part arranged below the plate part, and the plate part is provided with a through hole communicated with the inside of the shell part; the shell is internally provided with a second driving assembly for driving the C-axis workbench to rotate, and the C-axis workbench is positioned above the plate part and is connected with a power output end of the second driving assembly.

As a further improvement of the scheme, a cleaning mechanism for cleaning a grinding wheel of the grinding wheel mechanism is arranged on the grinding wheel mechanism, and the cleaning mechanism is positioned above the grinding wheel; the cleaning mechanism comprises a first air cylinder, a second motor arranged on a push rod of the first air cylinder, and a cleaning wheel connected with a power output shaft of the second motor.

As a further improvement of the scheme, a trimming mechanism for trimming the grinding wheel of the grinding wheel mechanism is arranged on one side of the grinding wheel mechanism; the trimming mechanism comprises a supporting rod, a second air cylinder arranged on the supporting rod and a trimming wheel arranged on a push rod of the second air cylinder; the dressing wheel is positioned on one side of the grinding wheel, and the axis of the dressing wheel is vertical to the axis of the grinding wheel.

As a further improvement of the scheme, the system also comprises a CCD camera used for positioning the tool to be negatively chamfered to the rotation center of the C-axis workbench; the CCD camera is positioned above the tool apron

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a negative chamfering grinding machine tool, which is characterized in that a Y-axis workbench capable of moving along a Y axis and an X-axis workbench capable of moving along an X axis are arranged on a supporting seat, a C-axis workbench capable of rotating along the Z axis is arranged on the Y-axis workbench, a tool apron used for clamping a tool to be subjected to negative chamfering is arranged on the C-axis workbench, a grinding wheel mechanism used for grinding the tool to be subjected to negative chamfering is arranged on the X-axis workbench, after the tool to be subjected to negative chamfering is arranged on the tool apron, the position relation between the grinding wheel mechanism and the tool to be subjected to negative chamfering is adjusted by the movement of the Y-axis workbench along the Y axis and the movement of the X-axis workbench along the X axis, the angle relation between the grinding wheel mechanism and the tool to be subjected to negative chamfering is adjusted by the rotation of the C-axis workbench around the Z axis, and the negative chamfering is easy to be carried out on the outer edge circular arc of the tool to be subjected to negative chamfering, so that. Through setting up Y axle screw actuating mechanism drive Y axle workstation and remove along the Y axle, it is connected with the weight structure that is used for providing the pulling force of Y axle direction in order to eliminate Y axle screw actuating mechanism's lead screw clearance deviation to set up Y axle workstation simultaneously, promptly when Y axle screw actuating mechanism drive Y axle workstation removes, the weight structure makes Y axle workstation receive a pulling force along the Y axle direction all the time, can make lead screw actuating mechanism's lead screw and screw-nut counterbalance tightly, thereby eliminate the clearance between lead screw and the screw-nut, thereby improve Y axle workstation moving accuracy, and then improve the blade holder on the Y axle workstation and treat the moving accuracy of burden chamfer cutter, effectively improve burden chamfer processingquality.

Drawings

FIG. 1 is a first perspective view of a negative chamfer grinding machine provided in an embodiment of the present invention;

FIG. 2 is a second perspective view of a negative chamfer grinding machine provided in an embodiment of the present invention;

FIG. 3 is a front view of a negative chamfer grinding machine provided in an embodiment of the present invention;

FIG. 4 is a first schematic view of the matching among the Y-axis screw driving mechanism, the weight structure and the Y-axis worktable according to the embodiment of the present invention;

FIG. 5 is a second schematic diagram of the matching among the Y-axis screw driving mechanism, the weight structure and the Y-axis worktable according to the embodiment of the present invention;

FIG. 6 is a third schematic view of the Y-axis screw driving mechanism, the weight structure and the Y-axis worktable according to the embodiment of the present invention;

FIG. 7 is a fourth schematic view of the Y-axis screw driving mechanism, the weight structure and the Y-axis table of the present invention;

FIG. 8 is a schematic view of a support base provided in accordance with an embodiment of the present invention;

FIG. 9 is a schematic view of an X-axis screw drive mechanism provided in an embodiment of the present invention;

FIG. 10 is a schematic view of a cleaning mechanism provided in an embodiment of the present invention;

FIG. 11 is a schematic view of a conditioning mechanism provided in an embodiment of the present invention;

FIG. 12 is a first view of a tool holder provided in an embodiment of the present invention;

FIG. 13 is a second view of a tool holder provided in an embodiment of the present invention;

FIG. 14 is a third schematic view of a tool holder provided in an embodiment of the present invention;

FIG. 15 is a sectional view taken along line A-A as provided in FIG. 14, in accordance with an embodiment of the present invention;

fig. 16 is a first schematic view of a base provided in the embodiment of the present invention;

FIG. 17 is a second view of a tool holder provided in an embodiment of the present invention;

FIG. 18 is a schematic view of a clamp provided in an embodiment of the present invention;

fig. 19 is a schematic view of a locking mechanism provided in an embodiment of the present invention.

In the figure:

1. a supporting seat; 2. a Y-axis table; 3. a C-axis workbench; 4. a tool to be negatively chamfered; 5. a tool apron; 6. an X-axis table; 7. a grinding wheel mechanism; 8. a Y-axis screw rod driving mechanism; 9. a heavy hammer structure; 81. a feed screw nut; 82. a screw rod; 83. a first drive assembly; 831. a first motor; 832. a first pulley; 833. a second pulley; 84. a limiting mechanism; 841. a guide bar; 842. a connecting rod; 843. a guide sleeve; 91. connecting ropes; 92. a guide member; 921. a support plate; 922. a guide wheel; 93. a balancing weight; 201. supporting the column; 21. a plate portion; 22. a shell portion; 30. a second drive assembly; 11. a cleaning mechanism; 111. a first cylinder; 112. a second motor; 113. cleaning the wheel; 71. a grinding wheel; 72. a base body; 73. a grinding wheel motor; 12. a dressing mechanism; 121. a support bar; 122. a second cylinder; 123. a dressing wheel; 10. a CCD camera; 13. an X-axis screw driving mechanism; 14. an electrical cabinet; 15. a control panel; 51. a base body; 52. a clamp; 521. a locking pin; 53. a locking mechanism; 531. a hook body; 532. a rod body; 533. a locking sleeve; 534. installing a sleeve; 16. and a connecting frame.

Detailed Description

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

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 19, the negative chamfering grinding machine tool provided in this embodiment includes a supporting base 1, a Y-axis table 2 movably disposed on the supporting base 1 along a Y-axis, a C-axis table 3 disposed on the Y-axis table 2 and capable of rotating around a Z-axis, a tool holder 5 disposed on the C-axis table 3 and used for holding a tool 4 to be negatively chamfered, an X-axis table 6 movably disposed on the supporting base 1 along an X-axis, and a grinding wheel mechanism 7 disposed on the X-axis table 6 and used for grinding the tool 4 to be negatively chamfered; a Y-axis screw rod driving mechanism 8 for driving the Y-axis workbench 2 to move along the Y axis is arranged on the supporting seat 1; the Y-axis workbench 2 is connected with a heavy hammer structure 9 which is used for providing tension force in the Y-axis direction for the Y-axis workbench 2 so as to eliminate the screw clearance of the Y-axis screw driving mechanism 8.

The lead screw clearance refers to the clearance between the lead screw and the lead screw nut.

Specifically, the supporting seat 1 is a table body with a hollow interior, and the Y-axis screw driving mechanism 8 and the weight structure 9 are both located inside the supporting seat 1.

Specifically, the Y-axis screw driving mechanism 8 includes a screw nut 81 rotatably disposed on the supporting seat 1, a screw 82 engaged with the screw nut 81, and a first driving assembly 83 for driving the screw nut 81 to rotate. One end of the screw rod 82 is abutted against the Y-axis workbench 2, the heavy hammer structure 9 and the screw rod 82 are located on the same side of the Y-axis workbench 2, so that the Y-axis workbench 2 always receives a pulling force along the Y axis and towards the direction close to the screw rod 82, the Y-axis workbench 2 is abutted against the screw rod 82, the screw rod 82 is abutted against the screw rod nut 81, a gap between the screw rod 82 and the screw rod nut 81 is eliminated, the moving precision of the Y-axis workbench 2 is improved, the moving precision of the tool apron 5 on the Y-axis workbench 2 and the tool 4 to be subjected to negative chamfering is improved, and the machining quality of the negative chamfering is effectively improved. The lead screw nut 81 is driven to rotate by the first driving assembly 83, so that the lead screw 82 makes a linear motion, when the lead screw 82 moves towards the left along the Y axis, the Y-axis workbench 2 moves towards the left along the lead screw 82 under the pulling force of the weight structure 9, and when the lead screw 82 moves towards the right along the Y axis, the Y-axis workbench 2 is pushed by the lead screw 82 to move towards the right.

Alternatively, the first driving assembly 83 includes a first motor 831, a first pulley 832 disposed on a power output shaft of the first motor 831, a second pulley 833 disposed on the lead screw nut 81, and a synchronous belt disposed between the first pulley 832 and the second pulley 833; the second pulley 833 is disposed coaxially with the feed screw nut 81. The second pulley 833 is fixed to the end surface of the feed screw nut 81. Through the work of the first motor 831, a power output shaft of the first motor 831 drives the first belt pulley 832 to rotate, the first belt pulley 832 drives the second belt pulley 833 to rotate through a synchronous belt, and the second belt pulley 833 drives the screw nut 81 to rotate, so that the screw 82 is driven to do linear motion relative to the screw nut 81. The structure is arranged, the transmission is stable, and the transmission torque is large.

Optionally, the Y-axis screw driving mechanism 8 further includes a connecting frame fixedly disposed inside the supporting seat 1, the screw nut 81 is disposed on an upper portion of the connecting frame through a bearing, and the first motor 831 is fixed on a lower portion of the connecting frame. Of course, the installation arrangement of the first motor 831 and the lead screw nut 81 is not limited to the above-mentioned structure, and may be a separate arrangement, for example, the first motor 831 may be directly fixed on the supporting base 1, and the lead screw nut 81 may be rotatably arranged on the supporting base 1 through a connecting member.

Further, the Y-axis screw driving mechanism 8 further includes a restricting mechanism 84 for restricting rotation of the screw 82. The limiting mechanism 84 comprises a guide rod 841, a connecting rod 842 and a guide sleeve 843, the guide sleeve 843 is fixed on the connecting frame and is positioned between the first belt pulley 832 and the second belt pulley 833, the guide rod 841 is in sliding fit with the guide sleeve 843, one end of the connecting rod 842 is connected with the guide rod 841, the other end of the connecting rod 842 is connected with one end of the screw 82 far away from the Y-axis workbench 2, when the screw nut 81 rotates to enable the screw 82 to do linear motion along the Y axis, the connecting rod 842 and the guide rod 841 do linear motion along with the screw 82, the guide rod 841 slides in the guide sleeve 843, the arrangement of the guide rod 841 and the connecting rod 842 limits the rotation of the screw 82 to enable the screw 82 to only do linear motion, the screw 82 is prevented from rotating in the rotating process of the screw nut 81, the matching precision is. Of course, the limiting mechanism 84 is not limited to the above structure and position relationship, and only needs to limit the rotation of the screw rod 82, for example, one end of the connecting member may be connected to the screw rod 82, and the other end may be slidably engaged with the supporting seat.

Specifically, the Y-axis table 2 includes a plate portion 21 and a housing portion 22 fixedly disposed below the plate portion 21, and the plate portion 21 is provided with a through hole penetrating the interior of the housing portion 22. The shell 22 is internally provided with a second driving assembly 30 for driving the C-axis workbench 3 to rotate, the C-axis workbench 3 is positioned above the plate part 21 and is connected with a power output end of the second driving assembly 30, and the C-axis workbench 3 is driven to rotate around the Z axis by the second driving assembly 30.

Further, a first guide rail is arranged on the support seat 1, and a first guide bar in sliding fit with the first guide rail is arranged on the plate portion 21. The first guide rail is provided with 2 bars, which are respectively provided on both sides of the plate portion 21 in the Y-axis direction, and accordingly, the first guide bar is also provided with 2 bars.

Specifically, weight structure 9 is including connecting rope 91, guide 92, balancing weight 93, and guide 92 sets up on supporting seat 1, and the one end of connecting rope 91 is connected with shell 22 of Y axle workstation 2, and the other end of connecting rope 91 is connected with balancing weight 93 after the guide of guide 92, and the rope 91 of being connected that lies in between guide 92 and Y axle workstation 2 is parallel with the Y axle, and the rope 91 of being connected after guide 92 is drawn perpendicularly and is hung balancing weight 93. The connecting rope 91 may be a steel wire rope. The weight 93 may be a metal block, such as an iron block, or may be another brick or block. In this embodiment, the weight block 93 is preferably formed by stacking a plurality of iron blocks. The weight 93 needs to have a gravity smaller than the driving force of the first motor 831, and at the same time, the weight needs to provide enough pulling force to make the Y-axis table 2 tightly contact the lead screw 82.

Optionally, connect rope 91 and be provided with two, connect two and be located the both sides of lead screw 82 respectively to be connected rope 91, two and connect the mutual parallel arrangement of rope 91, two connect the same end of rope 91 all be connected with the shell, two connect the other same end of rope 91 all be connected with balancing weight 93. With the above arrangement, the stability can be improved.

Optionally, the guide 92 includes a support plate 921 and a guide wheel 922 rotatably disposed on the support plate 921, the support plate 921 is fixed on the support base 1, and the connection rope 91 is connected to the counterweight 93 after being guided by the guide wheel 922. Through adopting above-mentioned structure, can reduce the friction between connecting rope 91 and the leading wheel for it is more smooth and easy when moving along with the Y axle workstation to connect rope 91.

Optionally, an abutting column 201 is disposed on the Y-axis table 2 along the Y-axis direction, one end of the abutting column 201 is fixedly disposed on the outer wall of the shell 22 of the Y-axis table 2, one end of the screw rod 82 close to the Y-axis table 2 abuts against the abutting column 201, and when the screw rod 82 moves along the Y-axis, the screw rod 82 abuts against the abutting column 201 to move the Y-axis table 2 along the Y-axis. Through adopting to support the shore 201, can reduce the length of lead screw 82, and then improve the lead screw 82 and be the stability when rectilinear movement, and lead screw 82 supports instead of direct connection with supporting the shore 201, the lead screw 82 of being convenient for and the installation cooperation of Y axle workstation 2.

Further, the second driving assembly 30 includes a third motor fixed to the housing 22, and a reducer connected to a power output shaft of the third motor, and the C-axis table 3 is connected to the power output shaft of the reducer. The C-axis workbench 3 is driven to rotate by the operation of a third motor.

Optionally, the C-axis table 30 is a cross table, which facilitates adjusting the position of the tool holder 51 disposed thereon, and thus the position of the tool to be chamfered.

Further, an X-axis screw driving mechanism 13 for driving the X-axis worktable to move along the X axis is arranged on the supporting seat 1. The X-axis screw driving mechanism 13 comprises two rotary base bodies arranged on the supporting base 1, an X-axis screw arranged between the two rotary base bodies, an X-axis screw nut matched with the X-axis screw, and a third driving assembly for driving the X-axis screw to rotate, wherein the X-axis screw nut is fixed on the X-axis workbench. The X-axis screw rod is driven to rotate by the third driving assembly, so that the X-axis screw rod nut makes linear motion, and the X-axis workbench is driven to move along the X axis.

Specifically, the third drive assembly includes the fourth motor, set up the third band pulley on the power output shaft of fourth motor, set up in the fourth band pulley of X axle lead screw one end, connect the hold-in range between third band pulley and fourth band pulley, through the work of fourth motor, its power output shaft drives the third band pulley rotatory, the third band pulley drives the fourth band pulley rotatory through the hold-in range, the fourth band pulley drives the rotation of X axle lead screw promptly, and then the drive X axle lead screw nut is linear motion.

Furthermore, a second guide rail is arranged on the supporting seat 1, and a second guide bar in sliding fit with the second guide rail is arranged on the X-axis workbench. The second guide rail is provided with 2, sets up in the both sides of X axle workstation 2 along X axle direction respectively, and correspondingly, the second conducting bar also is provided with 2.

Specifically, the grinding wheel mechanism 7 includes a base 72 provided on the X-axis table, a grinding wheel motor 73 provided on the base 72, and a grinding wheel 71 provided on a power output shaft of the grinding wheel motor 73. The grinding wheel 71 is driven to rotate by the operation of a grinding wheel motor. In this embodiment, the grinding wheel 71 is a parallel grinding wheel, and a cylindrical surface is used for grinding the tool to be negatively chamfered.

Further, the grinding wheel mechanism 7 is provided with a cleaning mechanism 11 for cleaning the grinding wheel 71 of the grinding wheel mechanism 7, and the cleaning mechanism 11 is located above the grinding wheel 71. The cleaning mechanism 11 comprises a first air cylinder 111, a second motor 112 arranged on a push rod of the first air cylinder 111, and a cleaning wheel 113 connected with a power output shaft of the second motor 112, wherein the axis of the cleaning wheel 113 is parallel to the axis of the grinding wheel 71. The first cylinder 111 is fixed to the grinding wheel motor. Through the action of the first cylinder 111, the push rod pushes the second motor 112, so that the cleaning wheel 113 is positioned right above the grinding wheel 71, and meanwhile, the second motor 112 drives the cleaning wheel 113 to rotate, so that the cleaning wheel 113 cleans the circumferential cylindrical surface of the grinding wheel 71, the cleaning in the machining process can be realized, and the self-sharpening performance of the grinding wheel 71 in the machining process is ensured.

Further, a dressing mechanism 12 for dressing the grinding wheel 71 of the grinding wheel mechanism 7 is provided on one side of the grinding wheel mechanism 7. The dressing mechanism 12 includes a support rod 121 disposed on the support base, a second cylinder 122 disposed on the support rod 121, and a dressing wheel 123 disposed on a push rod of the second cylinder 122. The dresser wheel 123 is located on one side of the grinding wheel 71, and the axis of the dresser wheel 123 is perpendicular to the axis of the grinding wheel 71. After the grinding wheel 71 is machined for a long time, the condition that the inner height and the outer height of the end face of the grinding wheel are inconsistent can occur, the second cylinder 122 acts to drive the trimming wheel 123 to move to be in contact with the cylindrical surface of the grinding wheel 71, so that the end face of the trimming wheel 123 polishes the cylindrical surface of the grinding wheel 71, the cylindrical surface of the grinding wheel 71 is smooth, and the machining quality is further ensured.

Further, the negative chamfering grinding machine tool further comprises a CCD camera 10 used for positioning the rotation center of the tool 4 to be subjected to negative chamfering to the C-axis workbench 3, and the CCD camera 10 is arranged above the tool apron 5 through a supporting column. The arc center of the tool to be negatively chamfered on the tool apron is adjusted to be concentric with the rotation center of the C-axis workbench through the CCD camera 10, centering is carried out, and the machining precision of the tool to be negatively chamfered 4 is guaranteed.

Further, the negative chamfering grinding machine tool further comprises an electrical cabinet 14 and a control panel 15 electrically connected with the electrical cabinet 14, the first motor 831, the third motor, the fourth motor, the grinding wheel mechanism 7, the dressing mechanism 12 and the CCD camera 10 are respectively electrically connected with the electrical cabinet, each electrical component is controlled through the control panel, and programming can be performed on the control panel 15 to control the negative chamfering grinding machine tool to perform negative chamfering processing on the tool to be subjected to negative chamfering.

Further, the tool apron 5 comprises a base body 51 and a clamp 52 detachably arranged on the base body for clamping the tool 4 to be negatively chamfered. The tool holder 5 further comprises a locking mechanism 53 disposed on the holder body 51 for locking the clamp 52 to the holder body 51. The upper portion of pedestal 51 is provided with an L shape and installs the position, and anchor clamps 52 are placed in L shape and are installed the position, makes anchor clamps 52 bottom surface be located the bottom surface that the position was installed to L shape, and anchor clamps 52's a side is laminated with the lateral wall of L shape and is installed the position mutually, fixes a position anchor clamps 52, guarantees the installation steadiness.

Further, the clamp 52 is an "Contraband" shaped clamp, and after the tool to be negatively chamfered is placed inside the clamp 52, the bolt is screwed in from the top wall of the clamp 52 to abut against the tool to be negatively chamfered, so that the tool to be negatively chamfered can be fixed on the clamp 52.

Specifically, the side wall of the jig 52 is provided with a locking pin 521. Locking mechanism 53 includes coupler 531, the body of rod 532, lock sleeve 533, installation cover 534, and installation cover 534 sets up on the lateral wall of pedestal 51, and body of rod 532 is located the inside of installation cover 534, and the one end of the body of rod 532 extends installation cover 534 and articulates mutually with coupler 531, and the other end of the body of rod 532 extends installation cover 534 and with lock sleeve 533 screw-thread fit, and coupler 531 passes the lateral wall of the L shape setting and hooks the fitting pin on anchor clamps 52. By tightening the rod 532 by screwing the locking sleeve 533, the rod 532 tightens the hook 531, and the hook 531 tightens the locking pin to lock the clamp 52 to the seat 51. The fixture 52 is convenient to replace, capable of clamping different tools to be negatively chamfered, wide in applicability, and capable of replacing the fixtures 52 with different heights so as to adjust the height of the negatively chamfered tools.

When a negative chamfering grinding machine tool is used for machining, a tool to be negatively chamfered is clamped on a clamp of a tool apron, the position of the negative chamfering tool is adjusted through the C-axis workbench 3 according to the display of a CCD camera, the arc center of the negative chamfering tool is adjusted to the rotation center of the C-axis workbench 3, and the position of the negative chamfering tool is in the correct chamfering angle position. And then operating the control panel, programming a negative chamfering grinding program, controlling the work of the X-axis workbench, the Y-axis workbench and the C-axis workbench, and performing negative chamfering processing on the negative chamfering tool.

From the above, the negative chamfering machine tool provided by this embodiment is configured such that the Y-axis table movable along the Y-axis and the X-axis table movable along the X-axis are disposed on the support, the C-axis table rotatable along the Z-axis is disposed on the Y-axis table, the tool post for holding the tool to be negatively chamfered is disposed on the C-axis table, the grinding wheel mechanism for grinding the tool to be negatively chamfered is disposed on the X-axis table, the negative chamfering program is compiled on the control panel after the tool to be negatively chamfered is mounted on the tool post, the movements of the X-axis table, the Y-axis table, and the C-axis table are controlled, the positional relationship between the grinding wheel mechanism and the tool to be negatively chamfered is adjusted by the movement of the Y-axis table along the Y-axis and the movement of the X-axis table along the X-axis, the angular relationship between the grinding wheel mechanism and the tool to be negatively chamfered is adjusted by the rotation of the C-axis table around the Z-axis, the outer edge arc of the tool for negative chamfering is easy to treat for negative chamfering, so that the tool can be adjusted in multiple directions for negative chamfering. Through setting up Y axle screw actuating mechanism drive Y axle workstation and remove along the Y axle, it is connected with the weight structure that is used for providing the pulling force of Y axle direction in order to eliminate Y axle screw actuating mechanism's lead screw clearance deviation to set up Y axle workstation simultaneously, promptly when Y axle screw actuating mechanism drive Y axle workstation removes, the weight structure makes Y axle workstation receive a pulling force along the Y axle direction all the time, can make lead screw actuating mechanism's lead screw and screw-nut counterbalance tightly, thereby eliminate the clearance between lead screw and the screw-nut, thereby improve Y axle workstation moving accuracy, and then improve the blade holder on the Y axle workstation and treat the moving accuracy of burden chamfer cutter, effectively improve burden chamfer processingquality.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a negative chamfer grinds lathe which characterized in that:

the grinding machine comprises a supporting seat (1), a Y-axis workbench (2) which is movably arranged on the supporting seat (1) along a Y axis, a C-axis workbench (3) which is arranged on the Y-axis workbench (2) and can rotate around a Z axis, a tool apron (5) which is arranged on the C-axis workbench (3) and is used for clamping a tool (4) to be negatively chamfered, an X-axis workbench (6) which is movably arranged on the supporting seat (1) along an X axis, and a grinding wheel mechanism (7) which is arranged on the X-axis workbench (6) and is used for grinding the tool (4) to be negatively chamfered;

a Y-axis screw rod driving mechanism (8) for driving the Y-axis workbench (2) to move along a Y axis is arranged on the supporting seat (1); the Y-axis workbench (2) is connected with a heavy hammer structure (9) which is used for providing tension force in the Y-axis direction for the Y-axis workbench (2) so as to eliminate a screw rod gap of the Y-axis screw rod driving mechanism (8).

2. The negative chamfer grinding machine according to claim 1, wherein:

the Y-axis screw rod driving mechanism (8) comprises a screw rod nut (81) rotatably arranged on the supporting seat (1), a screw rod (82) matched with the screw rod nut (81), and a first driving assembly (83) for driving the screw rod nut (81) to rotate;

one end of the screw rod (82) is abutted against the Y-axis workbench (2), and the heavy hammer structure (9) and the screw rod (82) are located on the same side of the Y-axis workbench (2).

3. The negative chamfer grinding machine according to claim 2, wherein:

the first driving assembly (83) comprises a first motor (831), a first belt pulley (832) arranged on a power output shaft of the first motor (831), a second belt pulley (833) arranged on the screw nut (81), and a synchronous belt arranged between the first belt pulley (832) and the second belt pulley (833);

the second belt wheel (833) and the screw nut (81) are coaxially arranged.

4. The negative chamfer grinding machine according to claim 2, wherein:

the Y-axis screw driving mechanism (8) further comprises a limiting mechanism (84) for limiting the rotation of the screw (82).

5. The negative chamfer grinding machine according to claim 2, wherein:

the heavy hammer structure (9) comprises a connecting rope (91), a guide piece (92) and a balancing weight (93);

the guide piece (92) is arranged on the supporting seat (1); one end of the connecting rope (91) is connected with the Y-axis workbench (2), and the other end of the connecting rope (91) is connected with the balancing weight (93) after passing through the guide piece (92);

the connecting rope (91) between the guide (92) and the Y-axis table (2) is parallel to the Y-axis.

6. The negative chamfer grinding machine according to claim 2, wherein:

a propping column (201) is arranged on the Y-axis workbench (2) along the Y-axis direction;

one end of the screw rod (82) close to the Y-axis workbench (2) is abutted against the abutting column (201).

7. The negative chamfer grinding machine according to claim 1, wherein:

the Y-axis workbench (2) comprises a plate part (21) and a shell part (22) arranged below the plate part (21), wherein a through hole communicated with the interior of the shell part (22) is formed in the plate part (21);

the C-axis workbench (3) is located above the plate portion (21) and connected with a power output end of the second driving assembly (30).

8. The negative chamfer grinding machine according to claim 1, wherein:

the grinding wheel mechanism (7) is provided with a cleaning mechanism (11) for cleaning a grinding wheel (71) of the grinding wheel mechanism (7), and the cleaning mechanism (11) is positioned above the grinding wheel (71);

the cleaning mechanism (11) comprises a first air cylinder (111), a second motor (112) arranged on a push rod of the first air cylinder (111), and a cleaning wheel (113) connected with a power output shaft of the second motor (112).

9. The negative chamfer grinding machine according to claim 1, wherein:

a trimming mechanism (12) for trimming a grinding wheel (71) of the grinding wheel mechanism (7) is arranged on one side of the grinding wheel mechanism (7);

the trimming mechanism (12) comprises a support rod (121), a second air cylinder (122) arranged on the support rod (121), and a trimming wheel (123) arranged on a push rod of the second air cylinder (122);

the dressing wheel (123) is positioned on one side of the grinding wheel (71), and the axis of the dressing wheel (123) is perpendicular to the axis of the grinding wheel (71).

10. The negative chamfer grinding machine according to any one of claims 1 to 9, wherein:

the device also comprises a CCD camera (10) used for positioning a tool (4) to be negatively chamfered to the rotation center of the C-axis workbench (3);

the CCD camera (10) is positioned above the tool apron (5).