CN211940326U - Grinding device for table type universal full-grinding tool - Google Patents

Abstract

The application discloses a desktop universal all-abrasive tool grinding and processing device, comprising a base on which a main grinding head is mounted, the main grinding head includes a plurality of coaxially arranged grinding tools; The rotating and axially moving adjusting wheel system, the main grinding head, the adjusting wheel system and the workpiece support together constitute a cylindrical grinding device for centerless cylindrical grinding of the workpiece; a surface grinding manual is installed below the main grinding head The worktable, above the main grinding head is installed the abrasive belt grinding head for grinding the surface of the workpiece through the abrasive belt. The main grinding head, the surface grinding manual worktable and the abrasive belt grinding head together form a plane for surface grinding the workpiece Grinding device; an internal cylindrical grinding device and a hand-held grinding device are arranged on the base, including a hand-held tool grinding device and a hand-held workpiece grinding device. The device has compact structure, clever and reasonable layout, and can complete rough machining, finishing, grinding and polishing of various surfaces such as outer circle, plane, inner circle and curved surface.

Description

A desktop universal all-abrasive grinding device

technical field

The application relates to the fields of mechanical engineering and grinding, and in particular to a desktop universal grinding tool grinding and processing device.

Background technique

The desktop small grinders currently used in the grinding process are all small tool grinders, mainly used for grinding turning tools, drills and other tools. The small hand-held grinding models involved mainly include angle grinders, hanging grinders, Portable belt sanders and pistol belt sanders are mainly used for grinding welds, removing burrs or burrs; or for mold polishing, etc.

The existing grinding equipment has the following problems: 1. The function is single and the processing type is limited; 2. The manual control is not easy to ensure the accuracy or the consistency of the machined surface, and the operator's technical level is required to be high, the labor intensity is high, and the efficiency is low. 3. There are fewer types of abrasives or replaceable abrasives, such as a single belt grinder or a single grinder.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a desktop universal all-abrasive grinding processing device suitable for all-abrasives and multi-functions, so as to realize the surface grinding of various types of workpieces combined with motor and manual operation.

In order to achieve the above tasks, the application adopts the following technical solutions:

A desktop universal all-abrasive tool grinding processing device, comprising a base, a main grinding head driven by a main motor is mounted on the base, and the main grinding head includes a plurality of coaxially arranged grinding tools;

The side of the main grinding head is equipped with an adjustment wheel system for driving the workpiece to rotate and move axially, and a workpiece support for placing the workpiece is arranged between the adjustment wheel system and the main grinding head, the main grinding head, the adjustment wheel system and the workpiece support. Together, they form a cylindrical grinding device for centerless cylindrical grinding of workpieces;

A plane grinding manual worktable is installed below the main grinding head, and a movable worktable for driving the workpiece to move under the main grinding head is arranged in the plane grinding manual worktable. There is a one-to-one corresponding workpiece fixing area; an abrasive belt grinding head for grinding the surface of the workpiece through an abrasive belt is installed above the main grinding head, and the main grinding head, the plane grinding manual table and the abrasive belt grinding head are composed together Surface grinding device for surface grinding of workpieces;

An internal grinding device is arranged on the base, and the internal grinding device performs internal grinding on the inner hole of the workpiece by driving the internal grinding wheel, or uses an abrasive belt to pass through the inner hole of the workpiece to perform internal grinding. ;

The base is provided with a hand-held grinding device, including a hand-held tool grinding device and a hand-held workpiece grinding device, wherein the hand-held tool grinding device includes a hanging grinder, the hand-held workpiece grinding device includes a polishing wheel and a Auxiliary bracket under the grinding head to support the workpiece.

Further, the main grinding head includes a main grinding head support, a main grinding head spindle and a grinding tool, wherein the grinding tool includes an abrasive belt grinding head contact wheel, a grinding wheel, and a polyurethane soft grinding wheel;

A pair of the main grinding head supports are arranged, the main grinding head support and the bottom are fixed on the base, the two ends of the main grinding head main shaft are movably connected with the bearing holes arranged on the main grinding head support; the main motor, the left end of the main grinding head spindle is connected with the output shaft of the right end of the main motor through a coupling;

The main grinding head main shaft is a stepped shaft, the abrasive belt grinding head contact wheel penetrates from the left end of the main grinding head main shaft, and is limited and fixed by the shaft shoulder; the grinding wheel penetrates from the right end of the main grinding head main shaft, passes through the shaft It is fixed after the shoulder is limited; the polyurethane soft grinding wheel penetrates from the right end of the main shaft of the main grinding head, and is fixed after being limited by the shoulder.

Further, the adjustment wheel system includes an adjustment wheel bracket, a hyperboloid adjustment wheel, a first slave V-belt pulley, an adjustment wheel motor, a first main V-belt pulley, an α angle wedge, and an adjustment wheel main shaft;

The hyperboloid adjusting wheel is fixedly installed on the adjusting wheel main shaft, a pair of adjusting wheel brackets are arranged, and both ends of the adjusting wheel main shaft are movably connected with the bearing holes on the adjusting wheel bracket; wherein, the bearing holes on the right adjusting wheel bracket It is a split structure, and the upper half of the bearing hole is an openable bearing cover; the regulating wheel motor is installed on the regulating wheel bracket, located on one side of the regulating wheel bracket on the left, and is at the output of the regulating wheel motor. The first main V-belt pulley is installed on the shaft, and the first slave V-belt pulley is connected with the left end of the main shaft of the adjusting wheel, and is connected with the first main V-belt pulley through the V-belt;

The α angle wedge is set at the bottom of the adjusting wheel bracket, so that an α angle is formed between the main shaft of the adjusting wheel and the base; by adjusting the position of the α angle wedge at the bottom of the adjusting wheel bracket, the axis of the hyperboloid adjusting wheel can be adjusted high.

Further, the surface grinding manual workbench includes a lead screw guide support, a tapered roller bearing, a hand wheel, a rectangular lead screw, a lead screw nut, a circular guide rail and the movable workbench;

Wherein, the lead screw guide support is installed on the base below the main grinding head, and both ends of the rectangular lead screw are installed on the lead screw guide support through tapered roller bearings, on the outer side of the lead screw guide support The handwheel is installed, and the handwheel is fixedly connected to the end of the rectangular lead screw; a pair of circular guide rails are arranged on both sides of the rectangular lead screw on the lead screw guide rail support, and both ends of the circular guide rail are connected to the lead screw. The guide rail supports are connected; the bottom of the movable table is provided with the lead screw nut and a pair of circular guide sleeves, wherein the lead screw nut is assembled on the rectangular lead screw, and the circular guide sleeve is assembled on the circular guide rail with clearance Cooperate;

The movable table is provided with three workpiece fixing areas corresponding to the abrasive belt grinding head contact wheel, grinding wheel and polyurethane soft grinding wheel in the main grinding head respectively. The workpiece is fixed on the corresponding workpiece fixing area with a fixture according to the grinding requirements, and then the handwheel is shaken to drive the movable table to move under the cooperation of the lead screw nut and the rectangular lead screw, so as to use the main grinding head to surface grind the workpiece. cut.

Further, the abrasive belt grinding head includes an abrasive belt grinding head contact wheel, a pressing plate, a top tensioning wheel, a movable bracket, a spring, an empty tensioning wheel, a tensioning wheel bracket and a first abrasive belt;

The tensioning wheel bracket is fixed on the upper part of the main grinding head bracket, the empty tensioning wheel is installed on one side of the tensioning wheel bracket through the wheel bracket, and the position of the empty tensioning wheel on the wheel bracket can be adjusted; The movable bracket is installed on the top of the tensioning wheel bracket through the inner hole, the spring is sleeved outside the movable bracket and fits with the inner hole, the top tensioning wheel is fixedly installed on the top of the movable bracket, and the first abrasive belt sleeve It is arranged on the contact wheel of the abrasive belt grinding head, and bypasses the idle tensioning wheel and the top tensioning wheel. Under the action of the spring force, the first abrasive belt is tensioned by the top tensioning wheel;

The grinding plate is arranged on the other side of the tensioning wheel bracket, and the grinding plate is located under the first abrasive belt and is fixed on the tensioning wheel bracket through the double-ended stud and the locking nut. The lock nut can adjust the position of the grinding plate;

For the hand-held workpiece, when the contact wheel of the abrasive belt grinding head drives the first abrasive belt to rotate, the hand-held workpiece is brought into contact with the first abrasive belt on the surface of the pressing plate to realize the plane grinding of the hand-held workpiece.

Further, the internal cylindrical grinding device includes a first internal cylindrical grinding device, and the first internal cylindrical grinding device includes an internal cylindrical grinding hollow shaft, an internal cylindrical grinding support, a retractable tool holder, and an internal cylindrical grinding device. grinding wheel;

The internal grinding support is arranged on the side of the main motor, the two ends of the internal grinding hollow shaft are installed on the internal grinding support, and the left end of the internal grinding hollow shaft is fixed with a second slave V-belt pulley, A second main V-belt pulley is installed on the output shaft at the left end of the main motor and is connected with the second slave V-belt pulley through a V-belt, so as to realize the transmission of the output power of the output shaft at the left end of the main motor to the inner cylindrical grinding hollow shaft; The right end of the grinding hollow shaft is internally provided with a Morse taper inner hole, and the inner hole is detachably equipped with a corresponding Morse taper expansion and contraction type tool holder; the expansion and contraction type tool holder clamps the handle of the internal grinding wheel Under the action of the main motor, the internal grinding wheel is driven to rotate at a high speed to realize the grinding process of the workpiece that needs to be ground.

Further, the internal cylindrical grinding device also includes a second internal cylindrical grinding device, and the second internal cylindrical grinding device includes a driving wheel, a tensioning wheel and a second abrasive belt, wherein the driving wheel is installed on the output shaft at the left end of the main motor. The tensioning wheel is installed on the left end of the inner cylindrical grinding hollow shaft, and the second abrasive belt is arranged on the driving wheel and the tensioning wheel; the second abrasive belt is a detachable abrasive belt.

Further, the hand-held tool grinding device includes a flexible shaft joint, a flexible shaft and the hanging grinding machine, one end of the flexible shaft is connected to the hanging grinding machine, and the other end is inserted into the inner hole of the output shaft at the left end of the main motor through the flexible shaft joint and is connected by the flexible shaft joint. Fasten the screw to fix it, and transmit the power of the main motor to the hanging mill.

Further, the auxiliary support in the hand-held workpiece grinding device is arranged on the side below the main grinding head and above the lead screw guide support, and the auxiliary support is fixed on the base. When the hand-held workpiece is ground, the workpiece is placed on the auxiliary support. On the bracket, the three positions of the abrasive belt grinding head contact wheel, grinding wheel and polyurethane soft grinding wheel can be used to achieve rough grinding, fine grinding and fine polishing or grinding of the workpiece.

Further, the hand-held workpiece grinding device further includes a polishing wheel for hand-held workpiece operation, and the polishing wheel is a wool wheel or a cloth wheel.

This application has the following technical features:

1. The grinding processing device proposed in this application has 14 workstations to cooperate with various abrasive tools to achieve all-round grinding, polishing, grinding and other manual or motorized operations. Almost all grinding and polishing functions are accumulated, including outer circle, plane, Roughing, finishing and grinding and polishing of various surfaces such as inner circle and curved surface; both coated abrasives, bonded abrasives, and super-finishing abrasives or accessories for polishing and grinding.

2. The process of the device is convenient and simple to implement, the clamping and adjustment operations are easy, the device structure is compact, the layout is ingenious, the main grinding head is fully and reasonably utilized, and the cost is low. Both manual operation and motorized implementation. It can be used for single function or multi-function at the same time.

3. Centerless grinding of small cylindrical workpieces with cylindrical grinding devices can solve the inherent problem of insufficient rigidity of workpieces in center grinding. Belt guarantees efficiency, grinding wheel guarantees precision, and polyurethane soft grinding wheel guarantees low roughness.

4. It is suitable for the grinding of small and fine workpieces of various types of surfaces, and the outer circle and plane of the centerless grinding of small workpieces can be adjusted to meet different size requirements.

Description of drawings

1 is a schematic top view of the overall structure of the device;

Fig. 2 is the A-A partial cross-sectional view of Fig. 1;

Fig. 3 is the partial projection view of C direction of Fig. 1;

FIG. 4 is a partial projection view of the direction B of FIG. 1 .

Description of the symbols in the figure: 1 base, 2 centerless grinding cylindrical workpiece, 3 bolts, 4 main motor, 5 second main V-belt pulley, 6 V-belt, 7 rectangular keys, 8 flexible shaft joints, 9 fastening screws, 10 Nuts, 11 Washers, 12 Spacers, 13 Polishing Wheels, 14 Flexible Shafts, 15 Hanging Grinders, 16 Nuts, 17 Washers, 18 Second V-belt Pulleys, 19 Sealing Rings, 20 Through Covers, 21 Angular Contacts Bearing, 22 internal grinding hollow shaft, 23 internal grinding support, 24 angular contact bearing, 25 transparent cover, 26 expanding and shrinking tool holder, 27 motor support, 28 internal grinding wheel, 29 grinding inner Round workpiece, 30 coupling sleeve, 31 coupling rectangular key, 32 main grinding head support, 33 angular contact bearing, 34 locking nut, 35 auxiliary support, 36 abrasive belt grinding head contact wheel, 37 lead screw guide support Seat, 38 grinding wheel, 39 tapered roller bearing, 40 hand wheel, 41 rectangular lead screw, 42 lead screw nut, 43 movable table, 44 circular guide rail, 45 polyurethane soft grinding wheel, 46 grinding wheel pressure plate, 47 main grinding head Bracket, 48 lock nut, 49 locating pin hole, 50 bearing hole, 51 angular contact bearing, 52 main grinding head spindle, 53 nut and washer, 54 adjusting wheel bracket, 55 hyperboloid adjusting wheel, 56 first slave V-belt Wheel, 57 Adjusting Wheel Motor, 58 Position Adjusting Bolt, 59 Lock Nut, 60 Bolt, 61 Grinding Flat Workpiece, 62 First Abrasive Belt, 63 Stud, 64 Grinding Plate, 65 Top Tensioner, 66 hexagon nut, 67 movable bracket, 68 spring, 69 idle tensioner, 70 tensioner bracket, 71 workpiece bracket, 72 first main V-belt, 73α angle wedge, 74 bolt, 75 angular contact bearing, 76 Rectangular Key, 77 Adjusting Wheel Spindle, 78 Bearing Cover, 79 Angular Contact Bearing, 80 Bolt, 81 Bolt, 82 Tensioner, 83 Second Abrasive Belt, 84 Soft Rubber Plug, 85 Workpiece Grinding Inner Circle, 86 Rectangle key, 87 left output shaft, 88 drive wheel, 89 bolts.

Detailed ways

Aiming at the deficiencies of the existing technologies and devices, the present application provides a small full-grinding tool grinding and processing device that is suitable for all-grinding tools and multi-functional based on the idea of "small equipment and large integration". : Abrasive belt, grinding wheel, polyurethane soft grinding wheel, wool wheel (used with abrasive paste), polishing cloth wheel, etc., to achieve different needs such as rough grinding, fine grinding, polishing and grinding; realize various types of surface grinding combined with motorized and manual Grinding operations can simultaneously or separately grind external surfaces, flat surfaces, internal holes, and curved surfaces within an adjustable size range. Manual operation can be hand-held machine operation or hand-held workpiece operation; there can be 14 different grinding operation stations, providing more advanced scientific methods and technologies for related application industries, especially small workpieces and special-shaped workpieces in manual workshops. means and hardware. A desktop universal all-abrasive grinding and processing device of the present application, all components and accessories of the device are installed on the base, and specifically include the following content:

1. Main grinding head

1, the main grinding head of the present application mainly includes main grinding head supports 32, 47, grinding wheel pressure plate 46, main grinding head spindle 52 and grinding tools, wherein the grinding tools can be abrasive belt grinding head contact wheels 36, grinding wheels 38, Polyurethane soft grinding wheel 45.

A pair of the main grinding head brackets 32 and 47 is provided, and the bottoms of the main grinding head brackets 32 and 47 are fixed on the base 1 through bolts and pins, as shown in FIG. 2 . Both ends of the main grinding head spindle 52 are connected with the bearing holes 50 provided on the main grinding head supports 32 and 47 through the angular contact bearings 33 and 51 , their end caps and sealing assemblies, and the positioning pin holes 49 . The main motor 4 is arranged on the base 1, and the left end of the main grinding head spindle 52 is connected with the output shaft of the right end of the main motor 4 through the coupling sleeve 30 and the coupling rectangular key 31.

The main grinding head spindle 52 is a stepped shaft, including a first shaft body at the left end, a second shaft body at the middle and a third shaft body at the right end, wherein the diameter of the second shaft body is larger than that of the third shaft body. , and the adjacent shafts are separated by shoulders. The abrasive belt grinding head contact wheel 36 penetrates into the first shaft body from the left end of the main grinding head main shaft 52, is limited by the shaft shoulder, is connected by a rectangular key, and is fixed by an end cover and a locking nut 34; The grinding wheel 38 penetrates into the second shaft body from the right end of the main grinding head spindle 52, is limited by the shaft shoulder, and is fixed by the two grinding wheel pressure plates 46 and locking nuts 48 on both sides; The right end of the grinding head main shaft 52 penetrates into the third shaft body, is limited by the shaft shoulder, and is fixed by two end caps and a locking nut.

When the output shaft at the right end of the main motor 4 rotates, the main grinding head spindle 52 is driven to rotate through the coupling sleeve 30 and the coupling rectangular key 31, thereby driving the abrasive belt grinding head contact wheel 36, grinding wheel 38, and polyurethane soft grinding wheel 45 to rotate. , in order to cooperate with different accessories to achieve different grinding functions.

In this solution, the same set of main grinding heads are used for centerless cylindrical grinding, surface grinding and hand-held workpiece grinding and polishing. Among them, the abrasive belt grinding head contact wheel 36 is used for rough machining, the grinding wheel 38 is used for finishing machining, and the polyurethane soft The grinding wheel 45 is used for polishing operations.

2. Cylindrical grinding device

The cylindrical grinding device includes the main grinding head, the adjusting wheel system and the V-shaped workpiece support 71 .

The adjusting wheel system, see FIG. 1 and FIG. 3 , includes the adjusting wheel bracket 54 , the hyperboloid adjusting wheel 55 , the first and the first slave V-belt pulley 56 , the adjusting wheel motor 57 , the first main V-belt pulley 72 , and the α angle wedge. 73. Adjusting wheel spindle 77.

The adjusting wheel system is installed on one side of the main grinding head, and the centerless grinding of the outer circle of the workpiece is realized through the cooperation of the adjusting wheel system, the workpiece support 71 and the main grinding head. Wherein, the hyperboloid adjusting wheel 55 is installed on the adjusting wheel main shaft 77 through the rectangular key 76 and the clamp rings at the left and right ends, a pair of adjusting wheel brackets 54 are provided, and the two ends of the adjusting wheel main shaft 77 pass through the shaft shoulder, angular contact bearing 75, 79 and its end cap and seal assembly are attached to the bearing holes on the adjustment wheel bracket 54. The bearing hole on the right adjusting wheel bracket 54 is a split structure, and the upper half of the bearing hole is an openable bearing upper cover 78 to facilitate the installation, disassembly and maintenance of the hyperboloid adjusting wheel 55 . The adjusting wheel motor 57 is installed on the adjusting wheel bracket 54 by bolts 74 , and is located on one side of the left adjusting wheel bracket 54 , and the first main V-belt pulley 72 is installed on the output shaft of the adjusting wheel motor 57 . The first and first slave V-belt pulley 56 is connected with the left end of the adjusting wheel main shaft 77 through a rectangular key, a nut washer, and is connected with the first main V-belt pulley 72 through a V-belt, then the rotation of the output shaft of the adjusting wheel motor 57 is adjusted. The moment is transmitted to the hyperboloid adjusting wheel 55 through the V-belt, so that the centerless grinding of the outer circle of the workpiece is performed on the hyperboloid adjusting wheel 55, and the workpiece is driven to rotate at a low speed and move axially.

The bottom of the adjustment wheel bracket 54 is provided with an α angle wedge 73 , and the adjustment wheel bracket 54 is fixed with the rectangular adjustment hole on the base 1 by bolts 80 on both sides of the α angle wedge 73 , so that the adjustment wheel main shaft 77 is fixed. An α angle is formed with the base, so that the hyperboloid adjusting wheel 55 forms an α angle with the outer cylindrical workpiece for centerless grinding, so as to meet specific grinding requirements. Adjusting the position of the α angle wedge 73 at the bottom of the adjusting wheel bracket 54 can adjust the height of the axis of the hyperboloid adjusting wheel 55 .

As shown in FIG. 1 and FIG. 2 , the workpiece support 71 is provided between the main grinding head and the adjusting wheel system, and the workpiece support 71 is used to install and place the cylindrical workpiece 2 that needs to be centerless grinding. During centerless grinding, the cylindrical workpiece 2 rotates under the hyperboloid adjusting wheel 55 and moves in the axial direction, and then passes through the abrasive belt grinding head to contact the wheel 36, the grinding wheel 38 and the polyurethane soft grinding wheel 45 to achieve rough machining, finishing and fine machining. polishing. In addition, the other end (left end) of the main motor 4 can also be equipped with a polishing cloth wheel or a wool wheel, which can be used with abrasive paste to achieve fine grinding and polishing of complex curved surfaces of small hand-held workpieces.

The adjusting wheel bracket 54 can adjust the axial position through the α angle wedge 73 and the rectangular adjusting hole on the base 1 , and then fix it with the bolts 80 after adjustment, so that it can adapt to the different diameters of the outer circular workpiece 2 . Surface grinding.

3. Surface grinding device

The surface grinding device includes the main grinding head, a manual worktable for surface grinding and an abrasive belt grinding head.

3.1 Surface grinding manual table

As shown in Figures 1 and 2, the surface grinding manual workbench includes a lead screw guide support 37, a tapered roller bearing 39, a hand wheel 40, a rectangular lead screw 41, a lead screw nut 42, a movable table 43, a circular shaped guide rails 44.

Wherein, the lead screw guide support 37 is installed on the base 1 below the main grinding head, and the two ends of the rectangular lead screw 41 are installed on the lead screw guide support 37 through tapered roller bearings 39 and end cover sealing components Above, the handwheel 40 is installed on the outer side of the lead screw guide support 37 , and the handwheel 40 is fixedly connected with the end of the rectangular lead screw 41 through a nut washer. A pair of circular guide rails 44 are provided on the screw guide support 37 on both sides of the rectangular screw 41 . The bottom of the movable table 43 is provided with the lead screw nut 42 and a pair of circular guide sleeves, wherein the lead screw nut 42 is assembled on the rectangular lead screw 41, and the circular guide sleeve is assembled on the circular guide rail 44 with clearance Cooperate.

The movable table 43 is provided with three workpiece fixing areas corresponding to the abrasive belt grinding head contact wheel 36, the grinding wheel 38 and the polyurethane soft grinding wheel 45 in the main grinding head respectively. The workpiece 61 of the grinding plane is fixed on the corresponding workpiece fixing area by a fixture according to the grinding requirements, and then the handwheel 40 is shaken to drive the movable table 43 to move under the cooperation of the lead screw nut 42 and the rectangular lead screw 41 , thereby Use the main grinding head for surface grinding of the workpiece.

Further, the screw guide support 37 is fixed on a pair of lugs of the base 1 by the locking nut 59, and a position adjusting bolt is arranged at the lower part of the base, which passes through the base 1 and whose end is in contact with the bottom of the screw guide support 37. 58. After loosening the locking nut 59, the position adjusting bolt 58 is rotated. During the movement of the position adjusting bolt 58, the screw guide support 37 is driven to adjust the position up and down. The height and low position of the movable table 43 can be adjusted to grind planes with different thicknesses.

3.2 Belt grinding head

2, the abrasive belt grinding head includes the abrasive belt grinding head contact wheel 36, the first abrasive belt 62, the pressing plate 64, the top tensioning wheel 65, the movable bracket 67, the spring 68, the idle tensioning wheel 69 and the tensioning Wheel bracket 70 .

The tensioning wheel bracket 70 is fixed on the upper part of the main grinding head brackets 37 and 42 by bolts, and the empty tensioning wheel 69 is installed on one side of the tensioning wheel bracket 70 through the wheel frame, and the empty tensioning wheel 69 is on the wheel. The position on the rack can be adjusted; the movable bracket 67 is installed on the top of the tensioning wheel bracket 70 through the inner hole, the spring 68 is sleeved outside the movable bracket 67 and is clearance fit with the inner hole, and the top of the movable bracket 67 is installed through the hexagonal nut 66 The top tensioning wheel 65 is fixedly installed. The first abrasive belt 62 is sleeved on the abrasive belt grinding head contact wheel 36, and bypasses the idle tensioning wheel 69 and the top tensioning wheel 65. Under the elastic force of the spring 68, the top tensioning wheel An abrasive belt 62 is tensioned.

The pressure grinding plate 64 is arranged on the other side of the tensioning wheel bracket 70. The grinding pressure plate 64 is located under the first abrasive belt 62 and is fixed on the tensioning wheel bracket 70 through the double-ended stud 63 and the locking nut. The movable stud 63 and the lock nut can adjust the position of the grinding plate 64 .

For the hand-held workpiece, when the abrasive belt grinding head contact wheel 36 drives the first abrasive belt 62 to rotate, the hand-held workpiece is brought into contact with the first abrasive belt 62 on the surface of the pressing plate 64 to realize plane grinding of the hand-held workpiece.

4. Internal grinding device

For internal grinding, there are two ways to achieve it: one is to use a small grinding wheel with appropriate fixtures, the other is to use an abrasive belt to pass through the inner hole of the workpiece, and then join to form a closed loop, and use a soft rubber plug to apply pressure to achieve grinding and polishing .

This embodiment provides two kinds of internal grinding devices. Referring to FIG. 1 , the first internal grinding device includes an internal grinding hollow shaft 22, an internal grinding support 23, a retractable tool holder 26, an internal grinding hollow shaft 22, an internal grinding Grinding wheel 28.

Among them, the internal grinding support 23 is arranged on the side of the main motor 4, the two ends of the internal grinding hollow shaft 22 are installed with angular contact bearings 21 and 24, and the sealing ring 19 and the transparent cover 20 and 25 are movably installed on the inner circle. Grinding support 23. The left end of the inner cylindrical grinding hollow shaft 22 is fixed with the second slave V-belt pulley 18 through the nut 16, the washer 17 and the rectangular key, and the second main V-belt pulley 5 is installed on the left end output shaft 87 of the main motor 4. The V-belt 6 is connected to the second slave V-belt 18 to realize the transmission of the output power of the output shaft 87 at the left end of the main motor 4 to the inner cylindrical grinding hollow shaft 22 . The right end of the inner cylindrical grinding hollow shaft 22 is provided with a No. 5 Morse taper inner hole inwardly, and the inner hole is detachably equipped with a corresponding No. 5 Morse taper expansion-contraction tool holder 26 . The expansion-contraction tool holder 26 clamps the shank of the internal grinding wheel 28, and under the action of the main motor 4, drives the internal grinding grinding wheel 28 to rotate at a high speed, so as to realize the workpiece 29 that needs to be ground. Grinding.

Referring to FIG. 4 , the second internal cylindrical grinding device includes a driving wheel 88 , a tension wheel 82 and a second abrasive belt 83 . The second internal cylindrical grinding device can be regarded as replacing the second main V-belt pulley 5 provided on the output shaft 87 at the left end of the main motor 4 with the driving pulley 88, and replacing the internal cylindrical grinding hollow shaft The second slave V-belt 18 at the left end of 22 is replaced with a tensioner 82, and the V-belt 6 is replaced with a second abrasive belt 83.

The second abrasive belt 83 is a narrow and detachable abrasive belt. After the second abrasive belt 83 is disassembled, it penetrates into the inner hole of the workpiece 85 that needs to grind the inner circle, and then the second abrasive belt 83 is removed. After the connection is complete, the power of the output shaft 87 at the left end of the main motor 4 is transmitted to the driving wheel 88 through the rectangular key, and then transmitted to the second abrasive belt 83 and the tensioning wheel 82 to realize the high-speed operation of the second abrasive belt 83 . The inner hole of the workpiece 85 is provided with a soft rubber plug 84 for pressing the second abrasive belt 83. During the grinding operation, the soft rubber plug 84 can make the second abrasive belt 83 close to the inner hole of the workpiece 85 to achieve the purpose of grinding and polishing. ; And push the soft rubber plug 84 to reciprocate in the axial direction, and the length of the inner hole of the workpiece 85 can be polished and polished.

The main motor 4 is fixed on the motor support 27 by bolts 89, and a strip-shaped fixing hole is opened on the motor support 27. The distance between the internal grinding support 23 and the main motor 4 is adjusted to tension the second abrasive belt 83 or the V-belt 6 . The motor support 27 is fixed on the base 1 by bolts 81 .

5. Handheld Grinding Device

Hand-held grinding devices include hand-held tool grinding devices and hand-held workpiece grinding devices, wherein:

5.1 Hand tool grinding device

As shown in FIG. 1 , the hand tool grinding device includes a flexible shaft joint 8 , a flexible shaft 14 and a hanging grinder 15 . One end of the flexible shaft 14 is connected to the hanging mill 15, and the other end is inserted into the inner hole of the output shaft 87 at the left end of the main motor 4 through the flexible shaft joint 8 and fixed by the tightening screw 9, so as to transmit the power of the main motor 4 to the main shaft of the hanging mill 15. And abrasive tools, grinding and polishing larger mold cavity or other workpieces.

5.2 Hand-held workpiece grinding device

As shown in Figures 1 and 2, the hand-held workpiece grinding device can realize hand-held grinding in four places, including the auxiliary bracket 35 arranged on the side below the main grinding head and above the screw guide support 37, and the auxiliary bracket 35 passes through the auxiliary bracket 35. The bolts 60 are fixed to the base 1. When grinding the workpiece by hand, place the workpiece on the auxiliary support 35, and cooperate with the three positions of the abrasive belt grinding head contact wheel 36, the grinding wheel 38, and the polyurethane soft grinding wheel 45 to realize the rough grinding of the workpiece. , fine grinding and fine polishing or grinding.

The hand-held workpiece grinding device also includes a polishing wheel 13 for hand-held workpiece operation. The polishing wheel 13 is connected to the left output shaft 87 of the main motor 4 through the rectangular key 7 , and is fixed by the nut 10 , the washer 11 , and the spacer 12 . The polishing wheel 13 can be a wool wheel or a cloth wheel, and can achieve fine grinding and polishing when matched with abrasive pastes of different particle sizes.

In one embodiment of the present application:

For the cylindrical grinding of the workpiece: there are three stations for the cylindrical grinding of the workpiece, which are the V-bracket and the adjustment wheel system with the belt grinding head contact wheel, grinding wheel and polyurethane soft grinding wheel in the main grinding head. Carry out different cylindrical grinding operations. For the centerless cylindrical grinding of slender rods, the surface roughness of workpieces with diameters from φ0.5 to 10mm can be reduced from Ra0.8μm to Ra0 after rough grinding with abrasive belts, fine grinding with grinding wheels and polishing with polyurethane soft grinding wheels. 05μm, and will not bend and deform.

For the surface grinding of the workpiece: there are four workstations for the surface grinding of the workpiece, which are the three workpiece fixing areas corresponding to the main grinding head on the movable table in the surface grinding device, and the pressure grinding on the abrasive belt grinding head. plate. The thickness of the workpiece plane that can be ground ranges from 0.5mm to 10mm. It can be used for rough grinding with abrasive belts, then finely ground with grinding wheels, and finally polished with polyurethane soft grinding wheels, which not only takes care of efficiency, but also ensures accuracy. For workpiece planes with holes, the hole edge can be deburred or chamfered. Reduce the speed of the main grinding head, under the belt grinding head or under the polyurethane soft grinding wheel, with the hand feed, the directional wire drawing operation of the smooth surface can also be carried out. Hand-held workpieces can also be surface ground or ground with a press grinding plate.

For the internal grinding of the workpiece: there are two stations for the internal grinding of the workpiece, which are the internal grinding wheel on the first internal grinding device and the abrasive belt on the second internal grinding device. The output shaft 87 at the left end of the main motor outputs power. One is that the V-belt speed-increasing drive cooperates with the fixture to use a small grinding wheel to grind the inner hole of φ5~50mm; for the inner hole whose diameter is less than φ5, replace the V-belt wheel with the belt tensioner The wheel and the drive wheel are inserted into the hole with an open abrasive belt, and then the joint is fixed. When the abrasive belt rotates, it cooperates with the soft rubber plug to reciprocate and press the inner hole to achieve the purpose of grinding and polishing.

For the grinding of curved surfaces (special-shaped surfaces): there are five stations for curved surface grinding, the hanging grinder in the hand-held tool grinding device, and the three places in the hand-held workpiece grinding device that use auxiliary brackets to cooperate with the main grinding head , at the polishing wheel of the hand-held workpiece grinding device. For the grinding and polishing of large-cavity surface workpieces such as plastic molds or die-casting molds, the hand-held tool is used, that is, the other end (left end) of the main motor is quickly connected to the flexible shaft to drive the hanging mill. The hanging mill can be adapted to various types of small grinding wheels, The wool wheel is used with abrasive paste to achieve grinding, grinding and polishing, and the minimum roughness can reach a mirror effect of 0.01μm. For various curved surfaces of odd-shaped small workpieces, the hand-held workpiece grinding and polishing method can be used, and the hand-held grinding auxiliary bracket can be used to grasp the workpiece manually. The polishing wheel (wool wheel or polishing cloth wheel) driven by the output of the left end of the main motor is used to achieve fine grinding and polishing with different particle sizes of abrasive paste.

This device is an all-round small machine tool that gathers all grinding tools to complete various grinding operations. , Art carving, jade polishing. On the other hand, it can also improve the precision and surface quality and improve the work efficiency compared with pure manual work.

Of course, by expanding its size ratio, large and medium-sized all-round grinders can also be manufactured. At this time, many manual feeds or operations can be equipped with motors or fixtures to implement motorized grinding and polishing.

Claims (10)

1. A table type universal full-grinding tool grinding device is characterized by comprising a base (1), wherein a main grinding head driven by a main motor (4) is arranged on the base (1), and the main grinding head comprises a plurality of grinding tools which are coaxially arranged;

the side surface of the main grinding head is provided with an adjusting wheel system for driving a workpiece to rotate and axially move, a workpiece support (71) for placing the workpiece is arranged between the adjusting wheel system and the main grinding head, the adjusting wheel system and the workpiece support (71) jointly form an excircle grinding device for centerless excircle grinding of the workpiece;

a plane grinding manual workbench is arranged below the main grinding head, a movable workbench (43) used for driving a workpiece to move below the main grinding head is arranged in the plane grinding manual workbench, and workpiece fixing areas corresponding to the grinding tools one by one are arranged on the movable workbench (43); an abrasive belt grinding head for grinding the surface of the workpiece through an abrasive belt is arranged above the main grinding head, and the main grinding head, the plane grinding manual workbench and the abrasive belt grinding head jointly form a plane grinding device for plane grinding of the workpiece;

an inner circle grinding device is arranged on the base (1), and the inner circle grinding device is used for carrying out inner circle grinding on the inner hole of the workpiece by driving an inner circle grinding wheel (28) or carrying out inner circle grinding by utilizing an abrasive belt to penetrate through the inner hole of the workpiece;

the grinding machine is characterized in that a handheld grinding device is arranged on the base (1) and comprises a handheld tool grinding device and a handheld workpiece grinding device, wherein the handheld tool grinding device comprises a hanging grinding machine (15), and the handheld workpiece grinding device comprises a polishing wheel (13) and an auxiliary support (35) which is arranged below the main grinding head and used for supporting a workpiece.

2. The universal table grinder milling device according to claim 1, wherein the primary grinding head includes a primary grinding head support, a primary grinding head spindle, and a grinding tool, wherein the grinding tool includes a belt-grinding head contact wheel (36), a grinding wheel (38), a polyurethane soft grinding wheel (45);

the main grinding head supports are arranged in a pair, the bottoms of the main grinding head supports are fixed on the base (1), and two ends of a main grinding head main shaft (52) are movably connected with bearing holes formed in the main grinding head supports; the main motor (4) is arranged on the base (1), and the left end of the main grinding head spindle (52) is connected with the output shaft at the right end of the main motor (4) through a coupler;

the main grinding head spindle (52) is a step spindle, and the abrasive belt grinding head contact wheel (36) penetrates through the left end of the main grinding head spindle (52), is limited by a shaft shoulder and is fixed; the grinding wheel (38) penetrates through the right end of the main grinding head spindle (52) and is fixed after being limited by a shaft shoulder; the polyurethane soft grinding wheel (45) penetrates from the right end of the main grinding head spindle (52) and is fixed after being limited by a shaft shoulder.

3. The grinding device of the table type universal full-grinding tool according to claim 1, wherein the regulating wheel system comprises a regulating wheel bracket (54), a hyperboloid regulating wheel (55), a first slave triangular belt wheel (56), a regulating wheel motor (57), a first master triangular belt wheel (72), an alpha angle wedge block (73) and a regulating wheel spindle (77);

the hyperboloid adjusting wheels (55) are fixedly arranged on the adjusting wheel main shaft (77), the adjusting wheel brackets (54) are arranged in pair, and two ends of the adjusting wheel main shaft (77) are movably connected with bearing holes in the adjusting wheel brackets (54); wherein, the bearing hole on the right regulating wheel bracket (54) is of a split structure, and the upper half part of the bearing hole is an openable bearing upper cover (78); the adjusting wheel motor (57) is arranged on the adjusting wheel bracket (54) and is positioned on one side of the adjusting wheel bracket (54) on the left side, the first main triangular belt wheel (72) is arranged on an output shaft of the adjusting wheel motor (57), and the first auxiliary triangular belt wheel (56) is connected with the left end of the adjusting wheel main shaft (77) and is connected with the first main triangular belt wheel (72) through a triangular belt;

the bottom of the adjusting wheel bracket (54) is provided with the alpha-angle wedge block (73), so that an alpha angle is formed between the main shaft (77) of the adjusting wheel and the base; the position of the alpha angle adjusting wedge block (73) at the bottom of the adjusting wheel bracket (54) can be adjusted, and the axial height of the hyperboloid adjusting wheel (55) can be adjusted.

4. The grinding device of the table type universal full grinder as claimed in claim 2, wherein the manual plane grinding worktable comprises a lead screw guide rail support (37), a tapered roller bearing (39), a hand wheel (40), a rectangular lead screw (41), a lead screw nut (42), a circular guide rail (44) and the movable worktable (43);

the lead screw guide rail support (37) is mounted on the base (1) below the main grinding head, two ends of the rectangular lead screw (41) are mounted on the lead screw guide rail support (37) through tapered roller bearings (39), the hand wheel (40) is mounted on the outer side of the lead screw guide rail support (37), and the hand wheel (40) is fixedly connected with the end of the rectangular lead screw (41); a pair of circular guide rails (44) are arranged on the lead screw guide rail support (37) and positioned at two sides of the rectangular lead screw (41), and two ends of each circular guide rail (44) are connected with the lead screw guide rail support (37); the bottom of the movable workbench (43) is provided with the screw nut (42) and a pair of circular guide sleeves, wherein the screw nut (42) is assembled on the rectangular screw (41), and the circular guide sleeves are assembled on the circular guide rails (44) and are in clearance fit;

the movable workbench (43) is provided with three workpiece fixing areas corresponding to a sand belt grinding head contact wheel (36), a grinding wheel (38) and a polyurethane soft grinding wheel (45) in the main grinding head respectively, when plane grinding operation is carried out, a workpiece needing to be ground into a plane is fixed on the corresponding workpiece fixing area by using a clamp according to grinding requirements, then a hand wheel (40) is shaken, and under the cooperation of a lead screw nut (42) and a rectangular lead screw (41), the movable workbench (43) is driven to move, so that the workpiece is ground into a plane by using the main grinding head.

5. The universal table grinder milling device according to claim 1, wherein the belt wheel head comprises a belt wheel head contact wheel (36), a pressure plate (64), a top tension wheel (65), a movable bracket (67), a spring (68), a free tension wheel (69), a tension wheel bracket (70) and a first belt (62);

the tensioning wheel bracket (70) is fixed at the upper part of the main grinding head bracket, the empty tensioning wheel (69) is arranged on one side surface of the tensioning wheel bracket (70) through a wheel carrier, and the position of the empty tensioning wheel (69) on the wheel carrier is adjustable; the top of the tensioning wheel support (70) is provided with the movable support (67) through an inner hole, the spring (68) is sleeved outside the movable support (67) and is in clearance fit with the inner hole, the top tensioning wheel (65) is fixedly arranged at the top of the movable support (67), the first abrasive belt (62) is sleeved on the abrasive belt grinding head contact wheel (36) and bypasses the empty tensioning wheel (69) and the top tensioning wheel (65), and the first abrasive belt (62) is tensioned through the top tensioning wheel (65) under the elastic action of the spring (68);

the other side of the tension wheel support (70) is provided with the press grinding plate (64), the press grinding plate (64) is positioned below the first abrasive belt (62) and is fixed on the tension wheel support (70) through the stud (63) and the locking nut, and the position of the press grinding plate (64) can be adjusted by rotating the stud (63) and the locking nut;

and for the hand-held workpiece, when the abrasive belt grinding head contact wheel (36) drives the first abrasive belt (62) to rotate, the hand-held workpiece is contacted with the first abrasive belt (62) on the surface of the pressure grinding plate (64), and the plane grinding of the hand-held workpiece is realized.

6. The universal table grinder milling device according to claim 1, wherein said internal grinding device comprises a first internal grinding device comprising a hollow internal grinding shaft (22), an internal grinding support (23), a collapsible toolholder (26), an internal grinding wheel (28);

the inner circle grinding support (23) is arranged on the side face of the main motor (4), two ends of the inner circle grinding hollow shaft (22) are mounted on the inner circle grinding support (23), the left end of the inner circle grinding hollow shaft (22) is fixedly provided with a second driven triangular belt wheel (18), a left end output shaft (87) of the main motor (4) is provided with a second main triangular belt wheel (5) and is connected with the second driven triangular belt wheel (18) through a triangular belt (6), and transmission of output power of the left end output shaft (87) of the main motor (4) to the inner circle grinding hollow shaft (22) is achieved; a Morse taper inner hole is formed in the right end of the internal grinding hollow shaft (22) towards the inside, and a corresponding Morse taper collapsible cutter holder (26) is detachably assembled in the inner hole; the handle part of the internal grinding wheel (28) is clamped by the collapsible tool holder (26), and the internal grinding wheel (28) is driven to rotate at a high speed under the action of the main motor (4), so that the grinding processing of a workpiece (29) needing to grind an internal circle is realized.

7. The universal table grinder grinding device according to claim 1, wherein the internal grinding device further comprises a second internal grinding device, the second internal grinding device comprises a driving wheel (88), a tension wheel (82) and a second abrasive belt (83), wherein the driving wheel (88) is mounted on the output shaft (87) at the left end of the main motor (4), the tension wheel (82) is mounted at the left end of the hollow internal grinding shaft (22), and the second abrasive belt (83) is arranged on the driving wheel (88) and the tension wheel (82); the second abrasive belt (83) is a detachable abrasive belt.

8. The grinding device of the table type universal full-grinding tool as claimed in claim 1, wherein the grinding device of the hand-held tool comprises a flexible shaft joint (8), a flexible shaft (14) and the hanging and grinding machine (15), one end of the flexible shaft (14) is connected with the hanging and grinding machine (15), the other end of the flexible shaft (14) is inserted into an inner hole of an output shaft (87) at the left end of the main motor (4) through the flexible shaft joint (8) and is fixed by a fastening screw (9), and the power of the main motor (4) is transmitted to the hanging and grinding machine (15).

9. The grinding processing device of the table type universal full-grinding tool as claimed in claim 2, characterized in that an auxiliary bracket (35) in the hand-held workpiece grinding device is arranged on one side below the main grinding head and above the lead screw guide rail support (37), the auxiliary bracket (35) is fixed on the base (1), when the hand-held workpiece is ground, the workpiece is lapped on the auxiliary bracket (35) and is matched with the three positions of the abrasive belt grinding head contact wheel (36), the grinding wheel (38) and the polyurethane soft grinding wheel (45) respectively to realize coarse grinding, fine grinding and fine polishing or grinding of the workpiece.

10. The universal bench grinder grinding device of claim 1, further comprising a polishing wheel (13) for workpiece handling, wherein the polishing wheel (13) is a wool wheel or a cloth wheel.

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