WO2017020350A1

WO2017020350A1 - Abrasive belt grinding machine

Info

Publication number: WO2017020350A1
Application number: PCT/CN2015/087490
Authority: WO
Inventors: 梁荣; 陈世添
Original assignee: 阳江鸿丰实业有限公司
Priority date: 2015-08-06
Filing date: 2015-08-19
Publication date: 2017-02-09
Also published as: CN105269436B; CN105269436A

Abstract

Disclosed is an abrasive belt grinding machine (100), comprising: a machine body (10) for bearing a workpiece (200); a first grinding head assembly (20), which is mounted on the machine body, wherein the grinding head assembly comprises a first abrasive belt (28), a first driving wheel (24), a first supporting plate (26) and a first grinding head driving member (22), and the first grinding head driving member cooperates with the first driving wheel to rotate the first driving wheel, thereby bringing the first abrasive belt to rotate around the first driving wheel and the first supporting plate; a second grinding head assembly (30), which is mounted on the machine body and spaced from the first grinding head assembly, wherein the second grinding head assembly comprises a second abrasive belt (38), a second driving wheel (34), a second supporting plate (36) and a second grinding head driving member (32), and the second grinding head driving member cooperates with the second driving wheel to rotate the second driving wheel, thereby bringing the second abrasive belt to rotate around the second driving wheel and the second supporting plate; and a grinding head adjustment mechanism (40) for adjusting the distance between the first and second abrasive belts and the workpiece in a first direction, and adjusting the distance between the second abrasive belt and the workpiece in a second direction. The abrasive belt grinding machine can grind a complicated curve surface into an even thickness, and ensures the machining precision while improving the working efficiency.

Description

Belt grinding machine

Technical field

The present invention relates to the field of machining, and more particularly to a belt grinding machine for grinding and polishing workpieces such as blades and blades.

Background technique

Abrasive belt grinding machines are equipment that grinds and polishes such as blades and blades using fast moving abrasive belts as abrasive tools. With the rapid development of grinding machine technology, abrasive belt grinding machines have developed into high-efficiency and low-power finishing equipment. Due to the limitations of the grinding mechanism and the mounting structure of the workpiece, the grinding and polishing of workpieces with complex geometries, such as aerospace blades and turbine blades, is generally done manually. Although manual grinding can achieve the grinding and polishing of complex curved surfaces, the quality of the curved surface is determined by the operator's proficiency due to the subjective influence of the human. Therefore, the effective control of the dimensional accuracy of the workpiece cannot be achieved, resulting in poor machining accuracy. The quality of the profile is difficult to guarantee, even in the surface polishing, the thickness of the grinding is uneven, the consistency of the product is difficult to guarantee; at the same time, the labor intensity of the worker is large and the processing efficiency is low.

Therefore, it is necessary to provide a belt grinding machine which can grind and polish complex curved surfaces, and grind the thickness in the surface polishing to ensure the quality of the profile, improve the work efficiency, and ensure the processing precision and reduce the labor intensity of workers. .

Summary of the invention

In order to solve the above technical problems, the present invention provides an abrasive belt grinding machine for grinding and polishing a workpiece. The abrasive belt grinding machine includes a bed carrying the workpiece, a first grinding head assembly mounted on the bed, a second grinding head assembly mounted on the bed and spaced from the first grinding head assembly, and a grinding head adjustment mechanism . The first grinding head assembly includes a first abrasive belt, a first drive wheel, a first support plate, and a first grinding head drive. The first abrasive belt bypasses the first driving wheel and the first supporting plate, and the first grinding head driving member cooperates with the first driving wheel to drive the first driving wheel to rotate to drive the first abrasive belt around The first drive wheel and the first support plate rotate. The second grinding head assembly includes a second abrasive belt, a second drive wheel, a second support plate, and a second grinding head drive. The second abrasive belt bypasses the second driving wheel and the second supporting plate, and the second grinding head driving member cooperates with the second driving wheel to drive the second driving wheel to rotate to drive the second abrasive belt around The second drive wheel and the second support plate rotate. The grinding head adjusting mechanism is configured to adjust a distance between the first abrasive belt and the second abrasive belt in the first direction and the workpiece, and adjust the second abrasive belt between the second abrasive belt and the workpiece distance.

Preferably, the first support plate includes a contact end aligned with the workpiece, the first abrasive belt surrounds the contact end, and an inner side of the first abrasive belt contacts the contact end.

Preferably, in the first direction, the contact end is parabolically shaped by a section perpendicular to the face of the first grinding head drive member, and the apex of the parabola is in contact with the inner side of the first abrasive belt.

Preferably, the first support plate has a central axis in the first direction, the parabola being axisymmetric with respect to the central axis.

Preferably, in the first direction, the contact end is semi-circular, semi-elliptical, triangular or trapezoidal in cross section perpendicular to the face of the first grinding head drive member.

Preferably, the second support plate includes a support body and a contact wheel, the support body includes a first end aligned with the workpiece, the first end is provided with a receiving groove, and the contact wheel is rotatably mounted in the receiving groove The outer circumferential surface of the contact wheel protrudes from the receiving groove, and the outer circumferential surface of the contact wheel exposed from the receiving groove contacts the inner side surface of the second abrasive belt.

Preferably, the receiving groove is a semi-cylindrical groove, the axis of the contact wheel is parallel to and spaced apart from the axis of the receiving groove, and the contact wheel is rotatably mounted in the receiving groove by the second belt.

Preferably, the receiving slot is a semi-cylindrical slot, the axis of the contact wheel is parallel to and spaced apart from the axis of the receiving slot, and the two ends of the contact wheel are respectively provided with a card hole, and the two ends of the receiving slot are respectively disposed with The corresponding hole of the card hole, the two posts are respectively engaged in the two card holes to enable the contact wheel to be rotatably mounted in the receiving groove.

Preferably, the receiving groove is a semi-cylindrical groove, the axis of the contact wheel is parallel to and spaced apart from the axis of the receiving groove, and the two ends of the contact wheel are respectively provided with a post, and the two ends of the receiving groove are respectively disposed Corresponding card holes, the two posts are respectively engaged in the two card holes to enable the contact wheel to be rotatably mounted in the receiving slot.

Preferably, the support body further includes a second end away from the workpiece, the second end is provided with an injection hole, and the support body is internally provided with two guiding holes, and the injection hole is in communication with the receiving groove, the two guides The lead holes are respectively located at two sides of the injection hole and communicate with the receiving groove through a plurality of through holes opened in the side wall of the guiding hole.

Preferably, the injection hole is filled with a coolant having a pressure to suspend the contact wheel in the coolant.

Preferably, the bed comprises a machine table, a fixed arm fixedly disposed on the machine table, and a movable arm slidably mounted on the fixed arm, the movable arm comprising a top wall opposite to the top wall a bottom wall, a front wall adjacent to a side of the workpiece, a rear wall opposite the front wall, a left wall connecting the top wall, the bottom wall, the front wall and the rear wall and protruding relative to the bottom wall, and a connection a top wall, the bottom wall, the front wall and the rear wall and a right wall protruding from the bottom wall, the front wall being slidably connected to one side of the fixing arm by a rail, the left wall and the right wall wrapping the fixing The first grinding head driving member and the second grinding head driving member are disposed on the top wall at intervals on opposite sides of the arm, and the first supporting plate and the second supporting plate are fixed to each other at intervals On the wall.

Preferably, the top wall, the bottom wall, the front wall and the rear wall enclose a receiving space, the bottom wall includes an upper surface away from the machine and a lower surface opposite to the upper surface, the grinding head is adjusted The mechanism includes a first grinding head adjustment assembly fixed to a side of the fixed arm opposite to the first abrasive belt, the first grinding head adjustment assembly including a grinding head adjusting motor, a grinding head adjusting screw, and fixing a sleeve rod on the lower surface, the sleeve rod is provided with an internally threaded hole, and one end of the grinding head adjusting screw rod is connected with the power output shaft of the grinding head adjusting motor, and the other end is inserted into the internally threaded hole of the sleeve rod.

Preferably, the front wall is provided with a front wall opening, and the grinding head adjusting mechanism further comprises a second grinding head adjusting assembly for adjusting a distance between the abrasive belt and the workpiece in the second direction, the second grinding head The adjustment assembly includes a fixing rod, an adjusting rod, a thumb screw, a mounting bracket, and a guiding wheel, one end of the fixing rod is fixed on the upper surface, and the other end of the fixing rod extends from the front wall opening, the adjusting rod The mounting brackets are respectively located at two sides of the fixing rod and extend from the front wall opening, and one end of the adjusting rod is height-adjustably mounted on the upper surface by the butterfly screw, and the other end of the adjusting rod can be Rotatablely coupled to the fixed rod, the mounting bracket is fixedly coupled to the adjusting rod by a connecting post passing through the fixing rod, the guiding wheel being rotatably mounted in the mounting bracket and with the second abrasive belt Inner side contact.

Preferably, the abrasive belt grinding machine further includes a first tension adjustment assembly, the first tension adjustment assembly including a first adjustment plate carried on the top wall, and a first hydraulic column obliquely fixed on the right wall And a first pivot fixedly disposed on the top wall, one end of the first adjusting plate is rotatably connected to the first hydraulic column, and the other end is rotatably connected to the first pivot shaft, and the first grinding head driving member is fixed Installed on the first adjustment plate.

Preferably, the abrasive belt grinder further includes a second tensioning adjustment assembly spaced from the first tensioning adjustment assembly, the second tensioning adjustment assembly including a second adjustment plate carried on the top wall, obliquely securing a second hydraulic column disposed on the left wall and a second pivot fixedly disposed on the top wall, one end of the second adjusting plate being rotatably connected to the second hydraulic column, and the other end and the second pivot The second grinding head driving member is fixedly mounted on the second adjusting plate.

Preferably, the abrasive belt grinding machine further comprises a workpiece adjustment assembly, the workpiece adjustment assembly comprising: a guide rail supported on the bed, the guide rail is provided with a pair of slide rails; and the slide rail is slidably coupled to the guide rail Forming an accommodating space between the stage and the rail table, the stage includes a bottom surface facing the accommodating space and a top surface away from the accommodating space, the top surface is for carrying the workpiece; a workpiece adjusting motor in the space; a protrusion having an internally threaded hole fixed on the bottom surface and housed in the accommodating space; and a workpiece adjusting screw, the one end of the workpiece adjusting screw and the workpiece adjusting The power output shaft of the motor is connected, and the other end is inserted into the internally threaded hole of the protrusion.

Preferably, the belt grinding machine further comprises a lifting assembly comprising a support rod mounted on the machine table and spaced apart from the fixed arm, a support arm at the top end of the support rod and extending to both sides, respectively located at the support Two rotating wheels on the arm, a fixed pulley fixed on the bottom wall, a weight, and a traction rope connected to the weight at one end, the other end of the traction rope sequentially bypasses the two rotating wheels and the fixed pulley Connected to the support rod.

Preferably, the abrasive belt grinding machine further comprises a shielding frame, wherein the first abrasive belt, the first driving wheel, the first supporting plate, the second abrasive belt, the second driving wheel and the second supporting plate are received therein In the shielding frame, a spraying device is disposed in the shielding frame for spraying the first supporting plate and the second supporting plate with the cooling liquid. Preferably, the second support plate comprises a support body, two fixing blocks, a rotating rod, and a hollow contact wheel, the support body comprising a first end aligned with the workpiece, the two fixing blocks from the first end The two sides of the rotating rod are respectively rotatably connected to the workpiece by two first bearings, and the contact wheel is rotatably disposed on the rotating rod by two second bearings. .

The abrasive belt grinding machine provided by the present invention adjusts the distance between the first abrasive belt and the second abrasive belt in the first direction and the workpiece by using a grinding head adjusting mechanism, and adjusts the second abrasive belt in the second The distance between the direction and the workpiece, so that the first abrasive belt and the second abrasive belt can simultaneously grind the workpiece into a complex curved surface, and the whole process is automatically controlled to avoid human operation, so the grinding thickness is Uniformity not only ensures the quality of the profile, but also improves work efficiency while ensuring machining accuracy and reducing labor intensity.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic perspective view of a belt grinding machine according to a first embodiment of the present invention.

Figure 2 is a perspective view of another angle of view of the abrasive belt grinder of Figure 1.

Figure 3 is a perspective view of a further perspective view of the abrasive belt grinder of Figure 1.

Figure 4 is a partial perspective view of a further perspective view of the abrasive belt grinder of Figure 1.

Figure 5 is a perspective enlarged view of the first support plate of the abrasive belt grinding machine of Figure 1.

Figure 6 is a cross-sectional view of the first support plate of Figure 5 taken along line VI-VI.

Figure 7 is a perspective enlarged view of the second support plate of the abrasive belt grinding machine of Figure 1.

Figure 8 is a schematic cross-sectional view of the second support plate of Figure 7.

Figure 9 is a perspective view of a belt grinding machine according to a second embodiment of the present invention.

Figure 10 is a perspective enlarged view of the second support plate of the belt grinding machine of Figure 9.

Figure 11 is a schematic cross-sectional view of the second support plate of Figure 10.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

First embodiment

Referring to FIG. 1, a belt grinding machine 100 according to an embodiment of the present invention is used for a plurality of workpieces 200 such as blades or blades. Grinding and polishing. In the present embodiment, the plurality of workpieces 200 are fixed in one of the holders 300. Specifically, the fixing frame 300 A holder body 302, a first side wall 304, a second side wall 306, two guide rods 308, and a guide block 309 are included. The first sidewall 304 and the second sidewall 306 Each extending from the holder body 302 in the same direction and opposite to each other, the two guiding rods 308 span the holder body 302, and each of the guiding rods 308 One end is fixed on the first side wall 304, and the other end is fixed on the second side wall 306. The guide block 309 is disposed on the two guiding rods 308 and is slidable along the two guiding rods 308. The plurality of workpieces 200 Tightly arranged to form a whole body, one side of the whole body is in close contact with the first side wall 304, and the guiding block 309 is in close contact with the other side of the whole body by an external force, thereby the workpiece 200 is It is firmly fixed in the holder 300.

Please refer to Figure 1 and Figure 2 together, the belt grinding machine 100 The utility model comprises a bed 10, a first grinding head assembly 20, a second grinding head assembly 30, a grinding head adjusting mechanism 40, a first tension adjusting assembly 50, a second tension adjusting assembly 60, and a workpiece adjustment Assembly 70, a lifting assembly 80, and a power distribution assembly 90.

The bed 10 includes a machine table 12, a fixed arm 14 fixedly disposed on the machine table 12, and a sliding device mounted on the fixed arm 14 Upper movable arm 16.

The machine table 12 is placed directly on the ground or placed on other adjustment devices such as adjustable horizontality or verticality. The machine table 12 A bearing surface 120 is provided that is remote from the ground or adjustment device. A holder 300 that fixes the plurality of workpieces 200 is placed on the bearing surface 120.

Referring to FIG. 1 to FIG. 3 together, the fixing arm 14 extends vertically upward from a position of the bearing surface 120 near the side. The fixed arm 14 The rectangular frame structure, which is open on one side, includes a first side plate 142, a second side plate 144, a third side plate 146, a first partition 147, a second partition 148, and a guide rail. 149 (Figure 4 Show). The second side plate 144 and the third side plate 146 extend from the first side plate 142 in the same direction. The first side plate 142 and the second side plate 144 And the third side plate 146 together form a groove 141. The first partition 147 and the second partition 148 are both located in the groove 141 and spaced apart from each other, and the first partition 147 and the second partition 148 Both ends are fixedly connected to the second side plate 144 and the third side plate 146, respectively. The guide rail 149 is mounted on a side of the first side plate 142 away from the recess 141.

The movable arm 16 includes a top wall 161, and a top wall 161 a bottom wall 162, a front wall 163, a rear wall 164 opposite the front wall 163, and a top wall 161, the bottom wall 162, the front wall 163 and the rear wall 164 are opposite to the bottom Wall 162 A protruding left wall 165 and a right wall 166 connecting the top wall 161, the bottom wall 162, the front wall 163 and the rear wall 164 and projecting relative to the bottom wall 162. The front wall 163 passes the guide rail 149 The first side panel 142 is slidably coupled to the second side panel 144 and the third side panel 146. The bottom wall 162 can be carried on the fixed arm 14 At the top, when the bottom wall 162 is driven by an external force, the movable arm 16 moves up and down along the guide rail 149. The top wall 161, the bottom wall 162, the front wall 163 and the rear wall 164 Enclosing a receiving space 160, the bottom wall 162 includes an upper surface 167 remote from the machine table 12 and a lower surface 168 opposite the upper surface 167. The front wall 163 defines a front wall opening 169.

The first grinding head assembly 20 is mounted on the bed 10. Specifically, the first grinding head assembly 20 The invention includes a first grinding head driving member 22, a first driving wheel 24 provided with corundum on the outer side surface, a first supporting plate 26, and a first abrasive belt 28 on the outer side surface provided with corundum. In this embodiment, the first grinding head driving member 22 A drive motor disposed on the top wall 161 has a power take-off shaft that cooperates with the first drive wheel 24 to drive the first drive wheel 24 to rotate. The first support plate 26 It is fixed to the front wall 163. The first abrasive belt 28 bypasses the first drive wheel 24 and the first support plate 26. The provision of corundum on the first drive wheel 24 can increase the frictional force with the first abrasive belt 28.

Referring to FIGS. 5 and 6, the first support plate 26 includes a contact end 262 aligned with the bearing surface 120 and connecting the contact end 262. Installer 264. The first abrasive belt 28 is wound around the contact end 262, and the contact end 262 is in contact with the inner side of the first abrasive belt 28. In the first direction (the Z-axis direction in FIG. 1), the contact end 262 A section cut by a face perpendicular to the power output shaft of the first grinding head driving member 22 is parabolic, and an apex of the parabola is in contact with an inner side of the first abrasive belt 28. The first support plate 26 is at

The first direction (the Z-axis direction in Fig. 1) has a central axis H which is axisymmetric with respect to the central axis H. The installer 264 The front wall 163 is fixed by gluing, snapping, screwing, or welding, so that the first support plate 26 can move up and down following the up and down movement of the movable arm 16, thereby adjusting the first belt. 28 The distance from the bearing surface 120.

The second grinding head assembly 30 is mounted on the bed 10. Specifically, the second grinding head assembly 30 A second grinding head drive member 32, a second drive wheel 34, a second support plate 36, and a second abrasive belt 38 provided with corundum on the outer side are included. In this embodiment, the second grinding head driving member 32 A drive motor disposed on the top wall 161 and spaced apart from the first grinding head drive member 22, the power output shaft cooperates with the second drive wheel 34 to drive the second drive wheel 34 to rotate. The second support plate 36 It is fixed to the front wall 163 and spaced apart from the first support plate 26. The second abrasive belt 38 bypasses the second drive wheel 34 and the second support plate 36 and is spaced apart from the first abrasive belt 28.

Referring to FIGS. 7 and 8, the second support plate 36 includes a support body 362 and a contact wheel 364. The support body 362 The first end 3621 is aligned with the bearing surface 120, the second end 3622 is away from the bearing surface 120, and the first end 3621 and the second end 3622 are connected. The third end 3623. The first end 3621 is provided with a receiving groove 3620. The receiving groove 3620 is a semi-cylindrical groove. The second abrasive belt 38 is wound around the contact wheel 364, and the contact wheel 364 is wound. The second abrasive belt 38 is supported and rotatably mounted in the receiving groove 3620. The axis of the contact wheel 364 is parallel to and spaced from the axis of the receiving groove 3620. The contact wheel 364 The outer circumferential surface protrudes from the receiving groove 3620, and the outer circumferential surface of the contact wheel 364 exposed from the receiving groove 3620 is in contact with the inner side surface of the second abrasive belt 38. The second end 3622 An injection hole 3624 is defined, and the inside of the support body 362 is provided with two guiding holes 3626, and the injection hole 3624 is in communication with the receiving groove 3620. The two guiding holes 3626 The two sides of the injection hole 3626 are respectively connected to the receiving groove 3620 through a plurality of through holes 3627 formed in the sidewall of the guiding hole 3626. The third end 3623 The front wall 163 is fixed by gluing, snapping, screwing, or welding, so that the second support plate 36 can move up and down following the up and down movement of the movable arm 16, thereby adjusting the second belt. 38 The distance from the bearing surface 120.

Referring to FIG. 1 and FIG. 2 together, the grinding head adjusting mechanism 40 is configured to adjust the first abrasive belt 28 and the second abrasive belt 38 in the first direction (FIG. 1). The distance between the workpiece and the workpiece 200 in the middle Z-axis direction, and adjusting the second abrasive belt 28 in the second direction (the X-axis direction in FIG. 1) with the workpiece 200 The distance between the first direction is perpendicular to the second direction. Specifically, the grinding head adjustment mechanism 40 includes a first grinding head adjustment assembly 42 and a second grinding head adjustment assembly 44.

The first grinding head adjustment component 42 The recess 141 is fixed to include a grinding head adjusting motor 422, a grinding head adjusting screw 424, and a sleeve rod 426 fixed to the lower surface 168. The sleeve 426 An internal threaded hole is formed, and a motor portion of the grinding head adjusting motor 422 is fixed to the first partition plate 147, and a power output shaft of the grinding head adjusting motor 422 passes through the first partition plate 147. The grinding head adjustment screw 424 The second partition 148 is passed through, and one end of the grinding head adjusting screw 424 is connected to the power output shaft of the grinding head adjusting motor 422, and the other end is inserted into the internally threaded hole of the sleeve rod 426.

The second grinding head adjustment component 44 A fixing rod 442, an adjusting rod 444, a thumb screw 446, a mounting bracket 448, and a guiding wheel 449 are included. The second grinding head adjustment assembly 44 is used to adjust the abrasive belt 38 The distance from the workpiece 200 in the second direction (the X-axis direction in Fig. 1). One end of the fixing rod 442 is fixed on the upper surface 167, and the other end of the fixing rod 442 is opened from the front wall opening 169. Extend out. The adjusting rod 444 and the mounting bracket 448 are respectively located at two sides of the fixing rod 442 and extend from the front wall opening 169. One end of the adjusting rod 444 passes the butterfly screw 446 The upper surface 167 is height-adjustable, and the other end of the adjustment lever 444 is rotatably coupled to the fixing rod 442 via a pivot (not shown). The mounting bracket 448 The 32-way guide wheel 449 is rotatably mounted to the mounting bracket 448 by a connecting post (not shown) passing through the fixing rod 442 to the adjusting rod 444. In the first direction, the guiding wheel 449 is located between the second driving wheel 34 and the second supporting plate 36, and the guiding wheel 449 and the second belt 38 The inner side is in contact. Adjusting the thumb screw 446, the adjusting rod 444 will rotate the mounting bracket 448 to change the pitch angle of the mounting bracket 448, thereby implementing the second abrasive belt 38 along the contact wheel 364. The axial movement (movement in the X direction) achieves fine adjustment in the second direction, aligning the workpiece 200. In addition, the grinding head adjusting mechanism 40 may further include two disposed on the front wall 163 to enable the first abrasive belt 28 A guide roller (not shown) having a narrow pitch and two guide rollers (not shown) provided on the front wall 163 to narrow the pitch of the second belt 38 are shown.

Referring to FIG. 1 and FIG. 2 together, the first tension adjustment assembly 50 includes a bearing on the top wall 161. The upper first adjustment plate 52, the first hydraulic column 54 obliquely fixed to the right wall 166, and the first pivot 56 fixedly disposed on the top wall 161. One end of the first adjusting plate 52 and the first hydraulic column 54 The other end is rotatably coupled to the first pivot 56. The first grinding head driving member 22 is fixedly mounted on the first adjusting plate 52.

The second tension adjustment assembly 60 includes a second adjustment plate 62 carried on the top wall 161 and is obliquely fixed to the left wall 165. A second hydraulic column 64 on the upper side and a second pivot shaft 66 fixedly disposed on the top wall 161. One end of the second adjusting plate 62 is rotatably connected to the second hydraulic column 64, and the other end and the second pivot 66 Turn the connection. The second grinding head drive member 32 is fixedly mounted on the second adjustment plate 62.

Referring to FIG. 3, the workpiece adjustment assembly 70 A rail table 72, a stage 74, a workpiece adjustment motor 76, a projection 77 having an internal thread, and a workpiece adjustment screw 78 are included. The rail table 72 is carried on the bearing surface 120 Up and facing the first abrasive belt 28, the rail table 72 is provided with a pair of slide rails 722. The stage 74 is slidably coupled to the rail table 72 via the slide rail 722, and the stage 74 and the guide rail stage 72 An accommodating space 79 is formed. The stage 74 includes a bottom surface 742 facing the accommodating space 79 and a top surface 744 away from the accommodating space. The top surface 744 is used to carry the workpiece 200 Fixing frame 300. The workpiece adjustment motor 76 is housed in the accommodating space 79. The protrusion 77 is fixed on the bottom surface 742 and received in the accommodating space 79. The workpiece adjustment screw 78 One end is connected to the power output shaft of the workpiece adjusting motor 76, and the other end is inserted into the internally threaded hole of the projection 77.

The lifting assembly 80 includes a support rod 82 mounted on the machine table 12 and spaced from the fixed arm 14 at the support rod 82 A support arm 84 extending at the top and extending to both sides, two rotating wheels 86 respectively located on the support arm 84, a fixed pulley 87 fixed to the bottom wall 162, a weight 88, and one end connected to the weight 88 Traction rope 89. The other end of the traction rope 89 is connected to the support rod 82 in turn by bypassing the two rotating wheels 86 and the fixed pulley 87.

The power distribution assembly 90 is disposed on the bearing surface 120 and spaced apart from the fixed arm 14 and the lifting assembly 80. The power distribution assembly 90 Internally provided with control means for controlling the first grinding head assembly 20, the second grinding head assembly 30, the grinding head adjusting mechanism 40, the first tension adjusting assembly 50, the second tension adjusting assembly 60, The workpiece adjustment assembly 70 And the operation of the lifting assembly 80.

Please refer to FIG. 1 to FIG. 8 together. Before grinding, the first abrasive belt 28 is adjusted in the first direction by the grinding head adjusting mechanism 40 (Z in FIG. 1). The distance between the axis and the workpiece 200. Specifically, the grinding head adjusting motor 422 drives the grinding head adjusting screw 424 to rotate, since the grinding head adjusts the screw rod 424 and the sleeve rod 426 For the threaded connection, the sleeve 426 is fixed to the bottom wall 162 of the movable arm 16, and the rotation of the movable arm 16 is restricted by the fixed arm 14, whereby the sleeve 426 It can only move up and down along the guide rail 149 (moving back and forth along the Z-axis direction), thereby driving the movable arm 16 to move up and down along the guide rail 149, thereby driving the first grinding head assembly fixed on the movable arm 16 20 It also moves up and down along the guide rail 149. Therefore, the first grinding head assembly 20 is driven back and forth, and the first abrasive belt 28 is in the first direction (the Z-axis direction in FIG. 1) and the workpiece 200. The distance between them can be adjusted to the desired range. Wherein, when the movable arm 16 moves upward along the guide rail 149, the weight 88 of the lifting assembly 80 The auxiliary upward traction force is provided, the burden of the grinding head adjusting motor 422 is reduced, and the lifting efficiency is improved.

When the above adjustment is completed, grinding is performed, and the first grinding head driving member 22 drives the first driving wheel 24 to rotate. The first driving wheel 24 is rotated. The first abrasive belt 28 is driven to move, the back pressure is provided through the contact end 262 to generate a contact pressure to the workpiece 200 and a grinding angle is formed, and the grinding and polishing of the workpiece 200 is completed. In the process, the first hydraulic column 54 One end of the first adjusting plate 52 is driven to rotate relative to the other end thereof, so that the first grinding head driving member 22 fixed on the first adjusting plate 52 is improved, and the first grinding head driving member 22 is further The mated first drive wheel 24 is also raised and the first abrasive belt 28 that is placed over the first drive wheel 24 is thus tensioned. The contact end 262 and the first abrasive belt 28 may be applied during the grinding and polishing process. The contact portion is injected with a coolant to effectively cool the contact end 262.

At the same time, the second grinding head assembly 30 can grind and polish another batch of workpieces. Specifically, the grinding head adjusting mechanism 40 is passed through as described above. While adjusting the distance between the first abrasive belt 28 and the workpiece 200 in the first direction (the Z-axis direction in FIG. 1), the second abrasive belt 38 is in the first direction (the Z-axis direction in FIG. 1) With the workpiece 200 The distance between them is also adjusted. Then, the thumb screw 446 is adjusted, and the adjusting rod 444 drives the mounting bracket 448 to rotate to change the pitch angle of the mounting bracket 448, thereby implementing the second abrasive belt 38. Along the axial movement of the contact wheel 364 (movement in the X direction), the distance between the second abrasive belt 38 and the workpiece 200 in the second direction (the X-axis direction in FIG. 1) can be finely adjusted, thereby Second belt 38 Align with the workpiece. Grinding can be performed below, the second grinding head assembly 30 drives the second driving wheel 34 to rotate, and the second driving wheel 34 drives the second abrasive belt 38 to move through the contact wheel 364. Providing the back pressure creates a contact pressure to the workpiece and forms a grinding angle to complete the grinding and polishing of the workpiece 200. In the process, the second hydraulic column 64 drives the second adjustment plate 62 One end of the second driving head 32 is fixed to the second adjusting plate 62, and the second driving wheel 34 is matched with the second grinding head driving member 32. Also raised, the second abrasive belt 38 that is placed over the second drive wheel 34 is thus tensioned. During the grinding and polishing process, it can be from the injection hole 3624 A pressurized coolant is injected therein, a portion of the coolant flows directly to the intermediate position of the contact wheel 364, and another portion of the coolant sequentially flows through the guiding hole 3626 and the plurality of through holes 3627 to the contact wheel 364. Both ends of the contact wheel 364 can be effectively and uniformly cooled. Moreover, since the coolant has pressure, the contact wheel 364 can be suspended in the coolant after the injection, in the abrasive belt 38. When rotating, it reduces friction and noise and increases the speed.

Additionally, the workpiece adjustment assembly 70 can be used to adjust the amount of grinding and polishing feed. Specifically, the workpiece adjustment motor 76 The workpiece adjustment screw 78 is driven to rotate. Since the workpiece adjustment screw 78 is screwed to the projection 77, the projection 77 is fixed on the carrier 74, and the rotation of the workpiece 74 is controlled by the guide rail 72. The protrusion 77 can only move along the front and rear of the slide rail 722 (the positive and negative directions of the Y axis), thereby driving the stage 74 along the slide rail 722. Move back and forth so that the feed can be adjusted depending on the grinding and polishing conditions.

The abrasive belt grinding machine 100 provided in the present embodiment adjusts the first abrasive belt 28 and the second abrasive belt 38 by the grinding head adjusting mechanism 40. a distance from the workpiece 200 in the first direction, and a distance between the second abrasive belt 38 and the workpiece 200 in the second direction, thereby causing the first abrasive belt 28 and the second Abrasive belt 38 Can simultaneously work on workpiece 200 Grinding into complex curved surfaces, and the entire process is automatically controlled to avoid human operation, so that the grinding thickness is uniform, not only can ensure the quality of the profile, improve work efficiency, but also ensure processing accuracy and reduce labor intensity.

It can be understood that in other embodiments, the contact end 262 is perpendicular to the first grinding head drive 22 in the first direction. The cross-section of the face of the power take-off shaft can also be designed according to the shape of the face that the workpiece 200 needs to form, for example, designed to be semi-circular, semi-elliptical, triangular, trapezoidal or any other regular or irregular shape.

It can be understood that, in other embodiments, the two ends of the contact wheel 364 are respectively provided with a card hole, and the receiving groove 3620 The two ends of the two sides are respectively disposed in the two card holes, so that the contact wheel 364 is rotatably mounted in the receiving groove 3620. Alternatively, the contact wheel 364 The two ends of the receiving slot 3620 are respectively provided with a card hole corresponding to the card post, and the two card posts are respectively engaged in the two card holes to enable the contact wheel 364 to rotate. Installed in the receiving slot 3620 Inside.

Second embodiment

Referring to Figures 9-11, the abrasive belt grinder 400 of the present embodiment and the abrasive belt grinder 100 of the first embodiment The structure is substantially the same except that the belt grinder 400 further includes a shield frame 92, and the second support plate 46 in the belt grinder 400 and the second support plate 36 in the belt grinder 100 The structure is different.

Specifically, the occlusion frame 92 can be used as the door 922 on one side. a hollow rectangular parallelepiped structure that is opened and closed, wherein the first abrasive belt, the first driving wheel, the first supporting plate, the second abrasive belt 48, the second driving wheel 44, and the second supporting plate 46 are received therein In the occlusion frame 92, the occlusion frame 92 A spraying device is disposed inside for spraying the first supporting plate and the second supporting plate 46 with a cooling liquid. On the other hand, the occlusion frame 92 It can prevent the waste from being cut around after cutting and harming people or objects, and can also avoid dust and impurities from the outside from contaminating the workpiece.

The second support plate 46 A support body 462, two fixed blocks 464, a rotating rod 466, and a hollow contact wheel 468 are included. The support body 462 encloses a first end 4622 that is aligned with the workpiece, the two fixed blocks 464 Extending from the two sides of the first end 4622 toward the workpiece, the two ends of the rotating rod 466 are respectively rotatably connected to the two fixing blocks 464 by two first bearings 461, the contact wheel 468 The two rotating bearings 466 are rotatably disposed by the two second bearings 463. When the second abrasive belt 48 drives the contact wheel 468 to operate, the rotating rod 466 is also opposite the contact wheel 468. Rotation, the relative rotation of the two can play the role of deceleration, thus making the second belt 48 grinding and polishing more stable.

The belt grinding machine 400 of the present embodiment and the belt grinding machine 100 of the first embodiment The beneficial effects are basically the same and will not be described here.

In addition, it can be understood that the belt grinding machine 100 in the first embodiment A cover frame, the first abrasive belt 28, the first drive wheel 24, the first support plate 26, the second abrasive belt 38, the second drive wheel 34, and the second support plate 36 may also be included. Each of the shielding frames is disposed in the shielding frame, and the spraying device is disposed in the shielding frame for the first supporting plate 26 and the second supporting plate 36. Spray the coolant. On the other hand, the occlusion frame can prevent the splashing of the waste after cutting from harming people or objects, and can also avoid dust and impurities from contaminating the workpiece, and is environmentally friendly.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus equivalent changes made in the claims of the present invention are still within the scope of the present invention.

Claims

An abrasive belt grinding machine for grinding and polishing a workpiece, the abrasive belt grinding machine comprising:

a bed carrying the workpiece;

a first grinding head assembly mounted on the bed, the first grinding head assembly comprising a first abrasive belt, a first drive wheel, a first support plate, and a first grinding head drive member, the first abrasive belt bypassing the a first driving wheel and the first supporting plate, the first grinding head driving member cooperates with the first driving wheel to drive the first driving wheel to rotate to drive the first abrasive belt around the first driving wheel and the first driving wheel a support plate is rotated;

a second grinding head assembly mounted on the bed and spaced from the first grinding head assembly, the second grinding head assembly including a second abrasive belt, a second drive wheel, a second support plate, and a second grinding head drive member The second abrasive belt bypasses the second driving wheel and the second supporting plate, and the second grinding head driving member cooperates with the second driving wheel to drive the second driving wheel to rotate to drive the second belt winding Rotating the second drive wheel and the second support plate;

a grinding head adjusting mechanism for adjusting a distance between the first abrasive belt and the second abrasive belt in the first direction and the workpiece, and adjusting the second abrasive belt between the second abrasive belt and the workpiece distance.
As in claim 1 The abrasive belt grinding machine is characterized in that the first support plate comprises a contact end aligned with the workpiece, the first abrasive belt surrounds the contact end, and an inner side of the first abrasive belt is in contact with the contact end.
Claim 2 The abrasive belt grinding machine is characterized in that, in the first direction, the contact end is parabolically shaped by a section perpendicular to a surface of the first grinding head driving member, and the apex of the parabola and the first The inside of the belt is in contact.
Claim 3 The abrasive belt grinding machine is characterized in that the first support plate has a central axis in the first direction, and the parabola is axisymmetric with respect to the central axis.
Claim 2 The abrasive belt grinding machine is characterized in that, in the first direction, the contact end is semicircular, semi-elliptical, triangular or trapezoidal in cross section perpendicular to the surface of the first grinding head driving member.
As in claim 1 The belt grinding machine is characterized in that the second support plate comprises a support body and a contact wheel, the support body comprises a first end aligned with the workpiece, the first end is provided with a receiving groove, and the contact wheel can The outer circumferential surface of the contact wheel protrudes from the receiving groove, and the outer circumferential surface of the contact wheel exposed from the receiving groove contacts the inner side surface of the second abrasive belt.
Claim 6 The belt grinding machine is characterized in that the receiving groove is a semi-cylindrical groove, the axis of the contact wheel is parallel and spaced apart from the axis of the receiving groove, and the contact wheel is rotatably supported by the second belt Installed in the receiving slot.
Claim 6 The belt grinding machine is characterized in that the receiving groove is a semi-cylindrical groove, the axis of the contact wheel is parallel to and spaced apart from the axis of the receiving groove, and the two ends of the contact wheel are respectively provided with a card hole, the receiving groove The two ends of the two sides are respectively disposed in the two card holes, so that the contact wheel is rotatably mounted in the receiving groove.
Claim 6 The belt grinding machine is characterized in that the receiving groove is a semi-cylindrical groove, the axis of the contact wheel is parallel and spaced apart from the axis of the receiving groove, and the two ends of the contact wheel are respectively provided with a post, the receiving groove The two ends are respectively disposed with the corresponding card holes, and the two latches are respectively engaged in the two card holes to enable the contact wheel to be rotatably mounted in the receiving groove.
As claimed in claims 6-9 The belt grinding machine according to any one of the preceding claims, wherein the support body further comprises a second end away from the workpiece, the second end is provided with an injection hole, and the support body is internally provided with two guiding holes, the injection The hole is in communication with the receiving groove. The two guiding holes are respectively located at two sides of the injection hole and communicate with the receiving groove through a plurality of through holes formed in the side wall of the guiding hole.
Claim 10 A belt grinding machine according to any one of the preceding claims, wherein the injection hole is filled with a coolant having a pressure so that the contact wheel is suspended in the coolant.
As in claim 1 The abrasive belt grinding machine is characterized in that the bed body comprises a machine table, a fixed arm fixedly disposed on the machine table, and a movable arm slidably mounted on the fixed arm, the movable arm including a top wall a bottom wall opposite to the top wall, a front wall adjacent to the side of the workpiece, and a rear wall opposite the front wall, connecting the top wall, the bottom wall, the front wall and the rear wall opposite to the bottom a left wall protruding from the wall, and a right wall connecting the top wall, the bottom wall, the front wall and the rear wall and protruding relative to the bottom wall, the front wall being slidably coupled to one side of the fixed arm by a rail, the left The wall and the right wall enclose the opposite sides of the fixed arm, and the first grinding head driving member and the second grinding head driving member are disposed on the top wall at intervals, the first supporting plate and the second supporting The plates are fixed to the front wall at intervals.
Claims 12 The abrasive belt grinding machine is characterized in that the top wall, the bottom wall, the front wall and the rear wall enclose a receiving space, and the bottom wall comprises an upper surface away from the machine table and opposite to the upper surface a lower surface, the grinding head adjusting mechanism comprises a first grinding head adjusting component fixed on a side of the fixing arm opposite to the first abrasive belt, the first grinding head adjusting component comprising a grinding head adjusting motor and a grinding head Adjusting a lead screw and a sleeve fixed to the lower surface, the sleeve is provided with an internally threaded hole, and one end of the grinding head adjusting screw is connected with a power output shaft of the grinding head adjusting motor, and the other end is disposed at the same Inside the threaded hole of the sleeve.
Claim 13 The abrasive belt grinding machine is characterized in that the front wall is provided with a front wall opening, and the grinding head adjusting mechanism further comprises a second grinding head adjusting assembly for adjusting the abrasive belt between the workpiece in the second direction The second grinding head adjustment assembly includes a fixing rod, an adjusting rod, a thumb screw, a mounting bracket, and a guiding wheel, one end of the fixing rod is fixed on the upper surface, and the other end of the fixing rod is from the front a wall opening extending, the adjusting rod and the mounting frame are respectively located at two sides of the fixing rod and extending from the front wall opening, and one end of the adjusting rod is height-mounted on the upper surface by the butterfly screw The other end of the adjusting rod is rotatably connected to the fixing rod, and the mounting bracket is fixedly connected to the adjusting rod through a connecting post passing through the fixing rod, and the guiding wheel is rotatably mounted in the mounting bracket And contacting the inner side surface of the second abrasive belt.
Claims 12 The abrasive belt grinding machine, characterized in that the abrasive belt grinding machine further comprises a first tension adjustment assembly, the first tension adjustment assembly comprising a first adjustment plate carried on the top wall, obliquely fixed thereto a first hydraulic column on the right wall, and a first pivot fixedly disposed on the top wall, one end of the first adjusting plate is rotatably connected to the first hydraulic column, and the other end is rotatably connected to the first pivot. The first grinding head driving member is fixedly mounted on the first adjusting plate.
Claim 15 The abrasive belt grinding machine, characterized in that the abrasive belt grinding machine further comprises a second tension adjustment assembly spaced from the first tension adjustment assembly, the second tension adjustment assembly comprising a bearing on the top wall a second adjusting plate, a second hydraulic column fixedly disposed on the left wall, and a second pivot fixedly disposed on the top wall, wherein one end of the second adjusting plate is rotatably connected to the second hydraulic column, The other end is rotatably coupled to the second pivoting member, and the second grinding head driving member is fixedly mounted on the second adjusting plate.
A belt grinding machine according to claim 1, wherein the belt grinding machine further comprises a workpiece adjustment assembly, the workpiece adjustment assembly comprising:

a rail table carried on the bed, the rail table is provided with a pair of slide rails;

An accommodating space is formed between the gantry and the gantry, and the pedestal includes a bottom surface facing the accommodating space and a top surface away from the accommodating space. The top surface is used to carry the workpiece;

a workpiece adjustment motor housed in the accommodating space;

a protrusion having an internally threaded hole, the protrusion being fixed on the bottom surface and housed in the accommodating space;

a workpiece adjustment screw, one end of the workpiece adjustment screw is connected to the power output shaft of the workpiece adjustment motor, and the other end is inserted into the internally threaded hole of the protrusion.
Claims 12 The abrasive belt grinding machine, characterized in that the abrasive belt grinding machine further comprises a lifting assembly, the lifting assembly comprising a support rod mounted on the machine table and spaced apart from the fixed arm, located at the top end of the support rod and extending to both sides Supporting arms, two rotating wheels respectively located on the supporting arm, a fixed pulley fixed on the bottom wall, a weight, and a traction rope connected to the weight at one end, and the other end of the traction rope sequentially bypasses the two The rotating wheel and the fixed pulley are connected to the support rod.
Claims 12 The abrasive belt grinding machine is characterized in that the abrasive belt grinding machine further comprises a shielding frame, the first abrasive belt, the first driving wheel, the first supporting plate, the second abrasive belt, the second driving wheel and The second support plate is received in the shielding frame, and a spraying device is disposed in the shielding frame for spraying the cooling liquid on the first supporting plate and the second supporting plate.
As in claim 1 The abrasive belt grinding machine is characterized in that the second support plate comprises a support body, two fixing blocks, a rotating rod, and a hollow contact wheel, the support body comprises a first end aligned with the workpiece, the two The fixing blocks extend from the two sides of the first end toward the workpiece, and the two ends of the rotating rod are respectively rotatably connected to the two fixing blocks by two first bearings, and the contact wheel passes through the two second bearings Rotating sleeve is set on the rotating rod.