CN112454108A

CN112454108A - Cutter clamping device for grinding machine

Info

Publication number: CN112454108A
Application number: CN202011298946.2A
Authority: CN
Inventors: 黄平
Original assignee: 黄平
Current assignee: Shenzhen Bojin hard tools Co.,Ltd.
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-03-09
Anticipated expiration: 2040-11-18
Also published as: CN112454108B

Abstract

A cutter clamping device for a grinding machine comprises a swinging assembly, an installation cover, a motor, a rotating shaft, a driving gear, an intermediate gear, a first driven gear, a second driven gear, a first incomplete gear, a second incomplete gear, a first installation shaft and a second installation shaft; two groups of swing assemblies are arranged side by side along the longitudinal direction, and each swing assembly comprises a rack, a sliding block and a slider; the output end of the motor is connected with the rotating shaft; the driving gear is arranged on the rotating shaft; the intermediate gear is meshed with the first driven gear; the first driven gear and the first incomplete gear are coaxially arranged on the first mounting shaft; the second driven gear and the second incomplete gear are coaxially arranged on the second mounting shaft; the first incomplete gear and the second incomplete gear are meshed with the two racks alternately and simultaneously. The grinding wheel and the oilstone can be clamped simultaneously, the device can be arranged on the same grinding machine, different types of grinding processing can be carried out on workpieces by utilizing the grinding wheel and the oilstone, and the production cost of a factory is effectively reduced.

Description

Cutter clamping device for grinding machine

Technical Field

The invention relates to the technical field of auxiliary accessories of cutters, in particular to a cutter clamping device for a grinding machine.

Background

A grinding machine is a machine tool that grinds the surface of a workpiece using a grinding tool. Most grinding machines perform grinding using a grinding wheel rotating at a high speed, and a few grinding machines perform grinding using oilstones, sanding belts and other grinders and free abrasives, such as honing machines, superfinishing machines, sanding belt grinders, grinding machines, polishing machines, and the like.

The cutter is clamped on the clamping device, the existing clamping device can only clamp one cutter, for example, a single grinding wheel or a single oilstone, when different types of grinding processing are required to be carried out on a workpiece to be ground, a grinding machine provided with different clamping devices and cutters is required to be used for processing, and the production cost of a factory is increased.

Disclosure of Invention

Objects of the invention

In order to solve the technical problems in the background art, the invention provides a cutter clamping device for a grinding machine, which can simultaneously clamp a grinding wheel and an oilstone, can be arranged on the same grinding machine, and can carry out different types of grinding processing on a workpiece by utilizing the grinding wheel and the oilstone, thereby effectively reducing the production cost of a factory.

(II) technical scheme

The invention provides a cutter clamping device for a grinding machine, which comprises two oilstones, a first grinding wheel and two second grinding wheels, wherein the two oilstones are arranged side by side along the longitudinal direction and comprise a swinging assembly, an installation cover, a motor, a rotating shaft, a driving gear, an intermediate gear, a first driven gear, a second driven gear, a first incomplete gear, a second incomplete gear, a first installation shaft and a second installation shaft;

the two groups of swing assemblies are arranged side by side along the longitudinal direction, the swing assemblies correspond to the oilstones one by one, each swing assembly comprises a rack, a sliding block and a sliding rail, the racks, the sliding blocks and the sliding rails are all vertically arranged, the racks are connected with the oilstones, the oilstones penetrate through the mounting cover, the sliding blocks are connected with the racks, the sliding blocks are arranged on the sliding rails in a sliding mode, and the sliding rails are arranged on the inner surface of the mounting cover; the motor is arranged on the mounting cover, and the output end of the motor is connected with the rotating shaft; the rotating shaft, the first mounting shaft and the second mounting shaft are all rotatably arranged on the mounting cover; the driving gear is arranged on the rotating shaft; the intermediate gear and the second driven gear are meshed with the driving gear; the intermediate gear is meshed with the first driven gear; the first driven gear and the first incomplete gear are coaxially arranged on the first mounting shaft; the second driven gear and the second incomplete gear are coaxially arranged on the second mounting shaft; the first incomplete gear and the second incomplete gear are alternately and simultaneously meshed with the two racks; the mounting cover is provided with a connecting component which can switch and drive the first sand or the second sand wheel to rotate.

Preferably, the surface of one side of the oilstone facing the rack is provided with an inserting table; the rack is provided with an insertion hole for inserting the inserting platform, and the rack is connected with the oilstone through a bolt.

Preferably, an elastic part is connected between the top end of the rack and the inner top surface of the mounting cover and between the bottom end of the rack and the inner bottom surface of the mounting cover.

Preferably, the two ends of the rack in the vertical direction are provided with sliding grooves in the vertical direction; fixing rods are vertically arranged on the top surface and the bottom surface inside the mounting cover; one end of the fixed rod, which is far away from the mounting cover, is positioned in the chute, and the fixed rod is connected with the rack in a sliding way; the elastic piece is a compression spring and is positioned on the outer periphery side of the fixed rod.

Preferably, the first incomplete gear and the second incomplete gear are identical in structure and each comprises two incomplete gear teeth which are uniformly arranged, and a single incomplete gear tooth is one fourth of the complete gear.

Preferably, the first grinding wheel is provided with a mounting hole; the connecting assembly comprises a switching mechanism and a mounting clip; the switching mechanism comprises two groups of transmission assemblies, a transmission shaft and a mobile platform, the transmission assemblies comprise two first bevel gears, two second bevel gears, a connecting shaft and two connecting bevel gears, the connecting shaft is rotatably arranged on the mounting cover, the two first bevel gears in the two groups of transmission assemblies are respectively arranged on the first mounting shaft and the rotating shaft, the two second bevel gears in the two groups of transmission assemblies are respectively arranged on the two connecting shafts, the two connecting bevel gears are respectively arranged at the two ends of the transmission shaft, the two connecting bevel gears are respectively arranged on the two ends of the transmission shaft, the two connecting bevel gears are rotatably arranged on the mobile platform, the mounting cover is provided with a mobile driving mechanism for driving the mobile station to move so as to enable one connecting bevel gear to be meshed with the first bevel gear and the second bevel gear in one group of transmission assemblies and enable the other connecting bevel gear to be disengaged from the first bevel gear and the second bevel gear in the other group of transmission assemblies; the mounting clamps are provided with two groups, each mounting clamp comprises a limiting plate, a mounting table and a threaded knob, and the two limiting plates in the two groups of mounting clamps are respectively arranged on the two connecting shafts in the two groups of transmission assemblies; the mounting table is of a boss structure, a threaded hole is transversely formed in the mounting table, and one transverse end of the mounting table is connected with the limiting plate; the screw thread knob is connected with the mounting table through screw threads.

Preferably, the mounting table is of a circular truncated cone structure or a prismatic table structure, and the section of the mounting table along the vertical direction is gradually reduced along the direction far away from the limiting plate; the screw thread knob comprises a knob portion and a screw rod portion, one end of the screw rod portion is connected with the knob portion, the other end of the screw rod portion stretches into the screw thread hole, the screw rod portion is in threaded connection with the installation platform, and an adjusting groove used for being embedded into the end portion of the installation platform is formed in the surface of one side, facing the screw rod portion, of the knob portion.

Preferably, the mounting cover is provided with a strip-shaped hole; a folding curtain is connected between the mounting cover and the oilstone; the folding curtain is positioned in the strip-shaped hole.

Preferably, the mounting cover is provided with a first blocking cover and a second blocking cover; the first grinding wheel is positioned on the inner side of the first blocking cover; the second grinding wheel is positioned on the inner side of the second shield; a scrap blocking box and a scrap collecting box are arranged on the mounting cover; the four chip blocking boxes are respectively positioned at the upper side and the lower side of the two oilstones; the scrap collecting box is positioned below the second grinding wheel.

Preferably, the mounting cover is provided with a mounting frame; two mounting frames are symmetrically arranged along the vertical direction relative to the mounting cover, and a plurality of reinforcing rods are connected between the two mounting frames; the reinforcing rods are arranged vertically.

Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:

the grinding wheel and the oilstone can be clamped simultaneously, the device can be arranged on the same grinding machine, different types of grinding processing can be carried out on workpieces by utilizing the grinding wheel and the oilstone, the production cost of a factory is effectively reduced, the first grinding wheel and the second grinding wheel are similar in structure, the difference is only expressed in granularity and size, the granularity of the two oilstones is also different, so that the grinding processing of different types and different degrees can be carried out on the workpieces to be ground by utilizing the two oilstones and the two grinding wheels, and the application range is large; only use a motor drive axis of rotation to rotate, power transmits to first emery wheel or second emery wheel through the coupling assembling that sets up, can guarantee only one in first emery wheel and the second emery wheel and be in the rotating state, and another is in quiescent condition, and the workman can use the pivoted emery wheel, has avoided the idle running of another emery wheel, practices thrift the energy. The axis of rotation drives the driving gear and rotates, the driving gear drives intermediate gear and second driven gear and rotates, intermediate gear drives first driven gear and rotates, first driven gear drives first incomplete gear through first installation axle and rotates, second driven gear drives the incomplete gear of second through the second installation axle and rotates, first incomplete gear and the incomplete gear of second are connected with two rack toothing in turn simultaneously, the slider slides on the slide rail, the slider leads to the moving direction of rack, make the rack move in vertical direction, two rack are opposite in the ascending moving direction of vertical direction, and can guarantee reciprocating motion in vertical direction, and then drive two oilstones reciprocating motion in vertical direction, can utilize the oilstone to carry out abrasive machining to the work piece.

Drawings

Fig. 1 is a schematic structural diagram of a tool clamping device for a grinding machine according to the present invention.

Fig. 2 is a first structural cross-sectional view of a tool holder for a grinding machine according to the present invention.

Fig. 3 is an enlarged view of a structure at a in fig. 2.

Fig. 4 is a second structural section view of the tool holder for a grinding machine according to the present invention.

Fig. 5 is an enlarged view of the structure at B in fig. 4.

Reference numerals: 1. -oilstone; 2. inserting a platform; 3. a rack; 301. a chute; 4. a bolt; 5. a slider; 6. a slide rail; 7. fixing the rod; 8. an elastic member; 9. a folding curtain; 10. mounting a cover; 11. a motor; 12. a rotating shaft; 13. a driving gear; 14. an intermediate gear; 151. a first driven gear; 152. a second driven gear; 161. a first incomplete gear; 162. a second incomplete gear; 171. a first mounting shaft; 172. a second mounting shaft; 18. a first grinding wheel; 181. mounting holes; 19. a limiting plate; 20. an installation table; 21. a threaded knob; 211. an adjustment groove; 22. a second grinding wheel; 23. a first shield; 24. a second shield; 25. a chip blocking box; 26. a scrap collecting box; 27. a mounting frame; 28. a reinforcing bar; 291. a first bevel gear; 292. a second bevel gear; 30. a connecting shaft; 31. connecting a bevel gear; 32. a drive shaft; 33. a mobile station; 34. and a moving drive mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-5, the tool clamping device for a grinding machine according to the present invention includes an oilstone 1, a first grinding wheel 18 and a second grinding wheel 22, wherein the oilstone 1 is provided with two oilstones side by side along a longitudinal direction, and includes a swing assembly, a mounting cover 10, a motor 11, a rotating shaft 12, a driving gear 13, an intermediate gear 14, a first driven gear 151, a second driven gear 152, a first incomplete gear 161, a second incomplete gear 162, a first mounting shaft 171 and a second mounting shaft 172;

the two groups of swing assemblies are arranged side by side in the longitudinal direction, the swing assemblies correspond to the oilstones 1 one by one, each swing assembly comprises a rack 3, a slider 5 and a slide rail 6, the racks 3, the sliders 5 and the slide rails 6 are all vertically arranged, the racks 3 are connected with the oilstones 1, the oilstones 1 penetrate through the mounting cover 10, the sliders 5 are connected with the racks 3, the sliders 5 are arranged on the slide rails 6 in a sliding mode, and the slide rails 6 are arranged on the inner surface of the mounting cover 10; the motor 11 is arranged on the mounting cover 10, and the output end of the motor 11 is connected with the rotating shaft 12; the rotating shaft 12, the first mounting shaft 171, and the second mounting shaft 172 are rotatably provided on the mounting cover 10; the driving gear 13 is arranged on the rotating shaft 12; the intermediate gear 14 and the second driven gear 152 are meshed with the driving gear 13; the intermediate gear 14 is in meshed connection with the first driven gear 151; the first driven gear 151 and the first incomplete gear 161 are coaxially disposed on the first mounting shaft 171; the second driven gear 152 and the second partial gear 162 are coaxially disposed on the second mounting shaft 172; the first incomplete gear 161 and the second incomplete gear 162 are alternately and simultaneously meshed with the two racks 3; the mounting cover 10 is provided with a connecting component for switching and driving the first grinding wheel 18 or the second grinding wheel 22 to rotate.

The grinding wheel and the oilstone 1 can be clamped simultaneously, the device can be installed on the same grinding machine, different types of grinding processing can be carried out on workpieces by utilizing the grinding wheel and the oilstone 1, the production cost of a factory is effectively reduced, the first grinding wheel 18 and the second grinding wheel 22 are similar in structure, the difference is only shown in granularity and size, the granularity of the two oilstones 1 is also different, and therefore different types and different degrees of grinding processing can be carried out on the workpieces to be ground by utilizing the two oilstones 1 and the two grinding wheels, and the application range is large; only one motor 11 is used for driving the rotating shaft 12 to rotate, power is transmitted to the first grinding wheel 18 or the second grinding wheel 22 through the arranged connecting assembly, only one of the first grinding wheel 18 and the second grinding wheel 22 can be ensured to be in a rotating state, the other one of the first grinding wheel 18 and the second grinding wheel 22 is in a static state, a worker can use the rotating grinding wheel, idling of the other grinding wheel is avoided, and energy is saved. The rotating shaft 12 drives the driving gear 13 to rotate, the driving gear 13 drives the intermediate gear 14 and the second driven gear 152 to rotate, the intermediate gear 14 drives the first driven gear 151 to rotate, the first driven gear 151 drives the first incomplete gear 161 to rotate through the first installation shaft 171, the second driven gear 152 drives the second incomplete gear 162 to rotate through the second installation shaft 172, the first incomplete gear 161 and the second incomplete gear 162 are alternately and simultaneously meshed with the two racks 3, the slider 5 slides on the sliding rail 6, the slider 5 guides the moving direction of the racks 3, the racks 3 are made to move in the vertical direction, the moving directions of the two racks 3 in the vertical direction are opposite, reciprocating movement in the vertical direction can be guaranteed, and then the two oilstones 1 are driven to reciprocate in the vertical direction, and grinding processing can be performed on a workpiece by using the oilstones 1.

In an alternative embodiment, an inserting table 2 is arranged on one side surface of the oilstone 1 facing the rack 3; the rack 3 is provided with a jack for inserting the inserting platform 2, and the rack 3 is connected with the oilstone 1 through a bolt 4.

When the oilstone 1 is mounted, the inserting table 2 is inserted into the insertion hole, and the inserting table 2 and the rack 3 are connected through the bolt 4, so that the oilstone 1 can be firmly mounted, and the oilstone 1 can stably grind a workpiece when reciprocating.

In an alternative embodiment, the elastic member 8 is connected between the top end of the rack 3 and the inner top surface of the mounting cover 10 and between the bottom end of the rack 3 and the inner bottom surface of the mounting cover 10.

It should be noted that, through setting up elastic component 8, can keep apart rack 3 and the inside top surface and the bottom surface of installation cover 10, prevent that two incomplete gears from all leading to the condition emergence that rack 3 strikeed on installation cover 10 when breaking away from the meshing because of accident, can cushion the removal of rack 3.

In an optional embodiment, the two ends of the rack 3 in the vertical direction are provided with sliding grooves 301 in the vertical direction; the fixing rods 7 are vertically arranged on the inner top surface and the inner bottom surface of the mounting cover 10; one end of the fixed rod 7, which is far away from the mounting cover 10, is positioned in the sliding groove 301, and the fixed rod 7 is connected with the rack 3 in a sliding manner; the elastic member 8 is a compression spring, and the elastic member 8 is located on the outer peripheral side of the fixing rod 7.

It should be noted that, by arranging the fixing rod 7, the elastic member 8 is sleeved on the fixing rod 7, so that the elastic member 8 can stably extend and contract in the fixing area and can be used for a long time; the fixed rod 7 further guides the moving direction of the rack 3, and the stability of the rack 3 in moving is further improved.

In an alternative embodiment, first partial gear 161 and second partial gear 162 are identical in structure and each include two partial gear teeth portions arranged uniformly, with a single partial gear tooth portion being one-fourth of a full gear.

It should be noted that, the two side edges of a single incomplete gear part are 90 °, and only one of the first incomplete gear 161 and the second incomplete gear 162 can be meshed with the two racks 3 at the same time, and the two incomplete gear parts on the incomplete gear respectively drive the two racks 3 to move up and down.

In an alternative embodiment, the first grinding wheel 18 is provided with a mounting hole 181; the connecting assembly comprises a switching mechanism and a mounting clip; the switching mechanism comprises transmission assemblies, transmission shafts 32 and a moving platform 33, the transmission assemblies are provided with two groups, each transmission assembly comprises a first bevel gear 291, a second bevel gear 292, a connecting shaft 30 and two connecting bevel gears 31, the two connecting shafts 30 are provided with two connecting shafts 30, the connecting shafts 30 are rotatably arranged on the mounting cover 10, the two first bevel gears 291 in the two groups of transmission assemblies are respectively arranged on the first mounting shaft 171 and the rotating shaft 12, the two second bevel gears 292 in the two groups of transmission assemblies are respectively arranged on the two connecting shafts 30, the two connecting bevel gears 31 are provided with two connecting bevel gears 31, the two connecting bevel gears 31 are respectively arranged at two ends of the transmission shafts 32, the transmission shafts 32 are rotatably arranged on the moving platform 33, and the mounting cover 10 is provided with a mechanism for driving the moving platform 33 to move so that one connecting bevel gear 31 is meshed with the first bevel gear 291 and the second bevel gear 292 in one group of transmission assemblies and the other connecting bevel A shift drive mechanism 34 in meshing engagement with the gear 291 and the second bevel gear 292; the mounting clamps are provided with two groups, each mounting clamp comprises a limiting plate 19, a mounting table 20 and a threaded knob 21, and the two limiting plates 19 in the two groups of mounting clamps are respectively arranged on the two connecting shafts 30 in the two groups of transmission assemblies; the mounting table 20 is of a boss structure, a threaded hole is formed in the mounting table 20 in the transverse direction, and one transverse end of the mounting table 20 is connected with the limiting plate 19; the threaded knob 21 is threadedly coupled to the mounting block 20.

When the first grinding wheel 18 is mounted, the first grinding wheel 18 is sleeved on the mounting table 20, the mounting table 20 is inserted into the mounting hole 181, and then the screw knob 21 is screwed into the mounting table 20, so that the first grinding wheel 18 is pressed, when the first grinding wheel 18 is dismounted, the operation is reversed, and the limit plate 19 is used for limiting the mounting position of the first grinding wheel 18; similarly, the second grinding wheel 22 can be attached and detached. The movable driving mechanism 34 can drive the movable table 33 to move, the movable table 33 drives the transmission shaft 32 to move, the transmission shaft 32 drives the two connecting bevel gears 31 to move, only one connecting bevel gear 31 in the two connecting bevel gears 31 is in a state of being meshed with the first bevel gear 291 and the second bevel gear 292 at the same time, then the connecting bevel gear 31 can transmit the power of the rotating shaft 12 or the first mounting shaft 171 to one connecting shaft 30, the connecting shaft 30 drives one grinding wheel to rotate, the other grinding wheel is in a static state, the structure is compact, the power transmission effect is good, and the switching process is simple.

In an alternative embodiment, the mounting platform 20 is a circular truncated cone structure or a prismatic table structure, and the section of the mounting platform 20 along the vertical direction is gradually reduced along the direction away from the limiting plate 19; the screw knob 21 includes a knob portion and a screw portion, one end of the screw portion is connected to the knob portion, the other end of the screw portion extends into the screw hole, the screw portion is connected to the mounting table 20 in a threaded manner, and an adjusting groove 211 for embedding the end portion of the mounting table 20 is formed in a surface of the knob portion facing the screw portion.

It should be noted that, the sizes of different grinding wheels are different, and the size of the mounting hole 181 is also different, so that the mounting table 20 is of a circular truncated cone structure or a truncated pyramid structure, the cross section of the mounting table 20 in the vertical direction is gradually reduced along the direction away from the limiting plate 19, the grinding wheels of different sizes can be mounted by using the mounting table 20, the edge of the inner wall of the mounting hole 181 is in contact with the mounting table 20, the grinding wheel is pressed by using the threaded knob 21, when the thickness of the grinding wheel is smaller than the length of the mounting table 20 in the transverse direction, one transverse end of the mounting table 20 is located in the adjusting groove 211, and the knob portion can be guaranteed to be smoothly abutted.

In an alternative embodiment, the mounting cover 10 is provided with a strip-shaped hole; a folding curtain 9 is connected between the mounting cover 10 and the oilstone 1; the folding curtain 9 is positioned in the strip-shaped hole.

It should be noted that, by providing the folding curtain 9, the components inside the installation cover 10 can be protected, so as to prevent dust and other impurities from entering, ensure the cleanness inside the installation cover 10, and ensure the normal operation of the components inside.

In an alternative embodiment, the mounting cover 10 is provided with a first shield 23 and a second shield 24; the first grinding wheel 18 is positioned inside the first shield 23; the second grinding wheel 22 is positioned inside the second shield 24; a chip blocking box 25 and a chip collecting box 26 are arranged on the mounting cover 10; the number of the chip blocking boxes 25 is four, and the four chip blocking boxes 25 are respectively positioned at the upper side and the lower side of the two oilstones 1; the chip collecting box 26 is located below the second grinding wheel 22.

By providing the first shield cover 23 and the second shield cover 24, when machining is performed using the first grinding wheel 18 and the second grinding wheel 22, the first shield cover 23 and the second shield cover 24 can shield the chips and prevent the chips from being scattered randomly; by providing the chip blocking box 25 and the chip collecting box 26, chips generated during grinding of a workpiece by the oilstone 1 and the grinding wheel can be blocked and collected.

In an alternative embodiment, the mounting cover 10 is provided with a mounting bracket 27; two mounting brackets 27 are symmetrically arranged in the vertical direction with respect to the mounting cover 10, and a plurality of reinforcing rods 28 are connected between the two mounting brackets 27; the reinforcing rods 28 are arranged vertically.

It should be noted that, through setting up mounting bracket 27, be convenient for install this device on the mill, through setting up stiffener 28, improved the firm nature of structure, be convenient for more firm installation this device, guarantee the stability of this device when using.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A cutter clamping device for a grinding machine comprises an oilstone (1), a first grinding wheel (18) and a second grinding wheel (22), wherein the oilstone (1) is provided with two oilstones side by side along the longitudinal direction, and the cutter clamping device is characterized by comprising a swing assembly, an installation cover (10), a motor (11), a rotating shaft (12), a driving gear (13), an intermediate gear (14), a first driven gear (151), a second driven gear (152), a first incomplete gear (161), a second incomplete gear (162), a first installation shaft (171) and a second installation shaft (172);

the two groups of swing assemblies are arranged side by side along the longitudinal direction, the swing assemblies correspond to the oilstones (1) one by one, each swing assembly comprises a rack (3), a sliding block (5) and a sliding rail (6), the racks (3), the sliding blocks (5) and the sliding rails (6) are vertically arranged, the racks (3) are connected with the oilstones (1), the oilstones (1) penetrate through the mounting cover (10), the sliding blocks (5) are connected with the racks (3), the sliding blocks (5) are arranged on the sliding rails (6) in a sliding mode, and the sliding rails (6) are arranged on the inner surface of the mounting cover (10); the motor (11) is arranged on the mounting cover (10), and the output end of the motor (11) is connected with the rotating shaft (12); the rotating shaft (12), the first mounting shaft (171) and the second mounting shaft (172) are all rotatably arranged on the mounting cover (10); the driving gear (13) is arranged on the rotating shaft (12); the intermediate gear (14) and the second driven gear (152) are meshed with the driving gear (13); the intermediate gear (14) is meshed with the first driven gear (151); the first driven gear (151) and the first incomplete gear (161) are coaxially arranged on the first mounting shaft (171); the second driven gear (152) and the second incomplete gear (162) are coaxially arranged on the second mounting shaft (172); the first incomplete gear (161) and the second incomplete gear (162) are alternately and simultaneously meshed with the two racks (3); the mounting cover (10) is provided with a connecting component which is used for switching and driving the first grinding wheel (18) or the second grinding wheel (22) to rotate.

2. The tool clamping device for the grinding machine is characterized in that an inserting table (2) is arranged on one side surface, facing the rack (3), of the oilstone (1); the rack (3) is provided with an insertion hole for inserting the insertion platform (2), and the rack (3) is connected with the oilstone (1) through a bolt (4).

3. A tool holding apparatus for a grinding machine according to claim 1, wherein elastic members (8) are connected between the top end of the rack (3) and the inner top surface of the mounting cover (10) and between the bottom end of the rack (3) and the inner bottom surface of the mounting cover (10).

4. The tool clamping device for the grinding machine is characterized in that sliding grooves (301) are formed in both ends of the rack (3) in the vertical direction; the top surface and the bottom surface inside the mounting cover (10) are both vertically provided with a fixed rod (7); one end of the fixed rod (7) far away from the mounting cover (10) is positioned in the sliding groove (301), and the fixed rod (7) is connected with the rack (3) in a sliding manner; the elastic piece (8) is a compression spring, and the elastic piece (8) is positioned on the outer periphery side of the fixing rod (7).

5. A tool holder for a grinding machine according to claim 1, characterized in that the first incomplete gear (161) and the second incomplete gear (162) are identical in structure and each comprises two incomplete gear teeth arranged uniformly, and a single incomplete gear tooth is a quarter of a complete gear.

6. A tool holding apparatus for a grinding machine as claimed in claim 1, characterised in that the first grinding wheel (18) is provided with a mounting hole (181); the connecting assembly comprises a switching mechanism and a mounting clip; the switching mechanism comprises a transmission assembly, a transmission shaft (32) and a moving platform (33), the transmission assembly is provided with two groups, the transmission assembly comprises a first bevel gear (291), a second bevel gear (292), a connecting shaft (30) and a connecting bevel gear (31), the connecting shaft (30) is provided with two groups, the connecting shaft (30) is rotatably arranged on an installation cover (10), the two first bevel gears (291) in the two groups of transmission assemblies are respectively arranged on a first installation shaft (171) and a rotating shaft (12), the two second bevel gears (292) in the two groups of transmission assemblies are respectively arranged on the two connecting shafts (30), the connecting bevel gears (31) are provided with two groups, the two connecting bevel gears (31) are respectively arranged at two ends of the transmission shaft (32), the two connecting bevel gears (31), the transmission shaft (32) is rotatably arranged on the moving platform (33), the installation cover (10) is provided with a connecting bevel gear (31) and a moving platform (33), so that the connecting bevel gear ( A moving driving mechanism (34) which is meshed with the first bevel gear (291) and the second bevel gear (292) in the member and enables the other connecting bevel gear (31) to be disengaged from the first bevel gear (291) and the second bevel gear (292) in the other group of transmission components; the mounting clamps are arranged in two groups, each mounting clamp comprises a limiting plate (19), a mounting table (20) and a threaded knob (21), and the two limiting plates (19) in the two groups of mounting clamps are respectively arranged on the two connecting shafts (30) in the two groups of transmission assemblies; the mounting table (20) is of a boss structure, a threaded hole is formed in the mounting table (20) in the transverse direction, and one transverse end of the mounting table (20) is connected with the limiting plate (19); the threaded knob (21) is in threaded connection with the mounting table (20).

7. The tool clamping device for the grinding machine is characterized in that the mounting table (20) is of a circular truncated cone structure or a prismatic table structure, and the section of the mounting table (20) in the vertical direction is gradually reduced in the direction away from the limiting plate (19); the screw thread knob (21) comprises a knob part and a screw rod part, one end of the screw rod part is connected with the knob part, the other end of the screw rod part extends into the screw hole, the screw rod part is in threaded connection with the mounting table (20), and an adjusting groove (211) used for being embedded into the end part of the mounting table (20) is formed in the surface of one side, facing the screw rod part, of the knob part.

8. A tool holder for grinding machines according to claim 1, characterized in that the mounting cup (10) is provided with a strip-shaped hole; a folding curtain (9) is connected between the mounting cover (10) and the oilstone (1); the folding curtain (9) is positioned in the strip-shaped hole.

9. A tool holder for grinding machines according to claim 1, characterized in that the mounting cup (10) is provided with a first shield (23) and a second shield (24); the first grinding wheel (18) is positioned at the inner side of the first blocking cover (23); the second grinding wheel (22) is positioned on the inner side of the second shield (24); a scrap blocking box (25) and a scrap collecting box (26) are arranged on the mounting cover (10); the number of the chip blocking boxes (25) is four, and the four chip blocking boxes (25) are respectively positioned on the upper side and the lower side of the two oilstones (1); the chip collecting box (26) is positioned below the second grinding wheel (22).

10. A tool holder for a grinding machine as claimed in claim 1, wherein the mounting housing (10) is provided with a mounting bracket (27); two mounting frames (27) are symmetrically arranged along the vertical direction relative to the mounting cover (10), and a plurality of reinforcing rods (28) are connected between the two mounting frames (27); the reinforcing rods (28) are arranged vertically.