CN216371670U

CN216371670U - Dynamic balance adjustable grinding tool rest

Info

Publication number: CN216371670U
Application number: CN202122008870.1U
Authority: CN
Inventors: 凤为保; 雷勋
Original assignee: Youji Machine Industrial China Co ltd
Current assignee: Youji Machine Industrial China Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-04-26
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to a dynamic balance adjustable grinding knife rest which is provided with a knife handle, wherein the bottom of the knife handle is provided with a screw joint, the part above the screw joint is an engagement part with an inverted cone-shaped structure, the outside of the engagement part is sleeved with a fixing device matched with the engagement part, the fixing device is fixedly connected to the knife handle through a nut in threaded fit with the screw joint, and a grinding wheel is fixedly connected to the fixing device; a connecting hole is formed in the center of the top of the grinding wheel, and a limiting hole which is communicated with the connecting hole up and down is formed in the center of the bottom of the grinding wheel; the fixing device is provided with a plurality of counterweight holes which are circularly arrayed by taking the center of the end surface as the circle center, and counterweight blocks are arranged in the counterweight holes according to the dynamic balance state of the grinding wheel. The grinding tool rest with adjustable dynamic balance can be mounted on a main shaft of a numerical control lathe, the position of a grinding edge of a grinding wheel can be controlled, the structure is simple, the operation is convenient, grinding scraps are not easy to accumulate on the grinding wheel, the grinding precision of a product is ensured, and the product quality and the production efficiency are improved.

Description

Dynamic balance adjustable grinding tool rest

Technical Field

The utility model relates to a grinding tool rest of a numerical control machine tool, in particular to a dynamic balance adjustable grinding tool rest.

Background

The specific product of digit control machine tool processing is in order to guarantee the machining precision of product, need use abrasive machining, it utilizes the emery wheel to grind the product, present numerical control abrasive machining is with emery wheel position many fixed, the grinding in-process, because the emery wheel supplied material can produce the grinding sweeps during processing, and grind the sweeps and can be along with the incessant accumulation of emery wheel incessant work, the grinding sweeps of accumulation can't in time discharge during abrasive machining, especially arrange the emery wheel of below form in, the grinding sweeps can directly accumulate on the emery wheel, lead to the grinding precision of emery wheel to reduce. In order to ensure the grinding accuracy of the product, it is generally necessary to increase the number of grinding times, which results in a decrease in production efficiency and an unstable product quality.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a dynamic balance adjustable grinding tool rest which can flexibly change the position and is not easy to cause the accumulation of grinding scraps on a grinding wheel.

In order to solve the technical problems, the utility model is realized by the following technical scheme: a dynamic balance adjustable grinding tool rest is provided with a tool shank, a screw joint which is integrally formed with the tool shank is arranged at the bottom of the tool shank, a joining part which is of an inverted cone-shaped structure is arranged at the position above the screw joint, a fixing device matched with the joining part is sleeved outside the joining part, the fixing device is fixedly connected to the tool shank through a nut in threaded fit with the screw joint, and a grinding wheel is fixedly connected to the fixing device; the end face of the grinding wheel is of a circular structure, a connecting hole is formed in the center of the top of the grinding wheel, a limiting hole which is communicated with the connecting hole up and down and is concentric with the connecting hole is formed in the center of the bottom of the grinding wheel, the diameter of the limiting hole is larger than that of the connecting hole, and the connecting hole and the limiting hole which are communicated up and down are matched with the fixing device and are fixedly connected together; the fixing device is provided with a plurality of counterweight holes which are circularly arrayed by taking the center of the end face as the circle center, and counterweight blocks matched with the counterweight holes in shape are arranged in the counterweight holes according to the dynamic balance state of the grinding wheel.

Furthermore, the fixing device consists of an upper fixing block and a lower fixing plate which are in upper and lower sleeve joint fit, the upper fixing block is clamped in the connecting hole, and the lower fixing plate is arranged in the limiting hole; the center of the top of the upper fixing block is provided with a handle connecting hole matched with the structure of the connecting part, the position of the periphery close to the top is a first flange matched with the outer side of the end face of the connecting hole in a clamping manner, the position below the first flange is a connecting part matched with the connecting hole in a splicing manner, the position below the connecting part is a downwards-protruding splicing head, the diameter of the splicing head is smaller than that of the connecting part, the center of the end face of the splicing head is provided with a positioning hole communicated with the handle connecting hole up and down, a nut is arranged in the positioning hole and in clearance fit with the positioning hole, the bottom screw joint of the handle inserted in the handle connecting hole is positioned in the positioning hole, and the handle is fixedly connected to the upper fixing block through the nut in the positioning hole and in threaded fit with the screw joint; the center of the end face of the lower fixed plate is provided with an inserting hole which is communicated up and down, the inserting hole is in sleeve joint with the inserting connector, a clamping protrusion matched with the connecting hole in an inserting mode is arranged at the position, close to the top, of the periphery of the lower fixed plate, a second flange in clearance fit with the limiting hole is arranged at the position, below the clamping protrusion, of the periphery of the lower fixed plate, the diameter of the second flange is larger than that of the clamping protrusion, and the balance weight hole is arranged on the outer side of the inserting hole in the bottom of the lower fixed plate.

Furthermore, the position that is located the connecting portion bottom on the last fixed block is provided with the location screw, be provided with the counter sink that corresponds from top to bottom with location screw quantity and position on the bottom plate, the counter sink is the through-hole, corresponds from top to bottom and cup joints complex last fixed block and bottom plate and passes the counter sink through the bolt and be in the same place with location screw threaded connection, realizes the fixed connection of last fixed block and bottom plate and emery wheel.

Furthermore, the end surface of the nut is of a circular structure, the center of the nut is provided with a threaded connecting hole which is communicated up and down, and the threaded connecting hole is in threaded fit with the screw joint; the part of the bottom of the nut, which is positioned outside the threaded connecting hole, is provided with an adjusting hole with a downward opening.

Furthermore, the number of the adjusting holes is at least two, and the adjusting holes are arranged at equal intervals by taking the center of the nut as a circle center.

Compared with the prior art, the utility model has the advantages that: the grinding tool rest with adjustable dynamic balance can be installed on a numerical control lathe spindle, the CNC editing program is used for controlling the vertical stepping motor of the lathe spindle to move up and down, and further the position of a grinding wheel grinding cutting edge is controlled.

Drawings

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

FIG. 1 is a cross-sectional view of a dynamic balance adjustable grinding carriage configuration of the present invention;

FIG. 2 is a schematic view of the assembly structure of the grinding wheel and the fixing device in the dynamic balance adjustable grinding tool rest of the present invention;

FIG. 3 is a schematic view of a grinding wheel configuration in a dynamic balance adjustable grinding carriage according to the present invention;

FIG. 4 is a schematic view of the structure of the upper fixing block of the adjustable dynamic balance grinding tool holder according to the present invention;

FIG. 5 is a schematic view of a lower retaining plate of a dynamic balance adjustable grinding carriage according to the present invention;

FIG. 6 is a schematic view of a tool shank in a dynamic balance adjustable grinding tool holder according to the present invention;

FIG. 7 is a schematic view of a nut in a dynamic balance adjustable grinding carriage according to the present invention;

FIG. 8 is a schematic view of a dynamic balance adjustment device for a dynamic balance adjustable grinding tool post according to the present invention;

FIG. 9 is a schematic view of a nut adjustment wrench;

FIG. 10 is a schematic view of a structure of a correcting balance bar in a dynamic balance adjusting device of a dynamic balance adjustable grinding tool rest according to the present invention;

FIG. 11 is a schematic view of an assembly structure of a dynamic balance adjusting device and a grinding wheel of a grinding tool rest with adjustable dynamic balance according to the present invention.

In the figure: 1. a grinding wheel; 11. connecting holes; 12. a limiting hole; 2. a fixing device; 21. an upper fixed block; 211. a cutter handle connecting hole; 212. positioning holes; 213. a plug-in connector; 214. positioning the screw hole; 215. a connecting portion; 216. a first flange; 22. a lower fixing plate; 221. inserting holes; 222. a countersunk hole; 223. clamping the bulges; 224. a second flange; 225. a weight port; 3. a knife handle; 31. a joining section; 32. a screw joint; 4. a nut; 41. connecting a threaded hole; 42. an adjustment hole; 5. a correction table; 6. correcting the balance bar; 61. a polish rod; 62. a connecting portion; 63. a fixed part; 7. a nut adjusting wrench; 71. and (4) protruding.

Detailed Description

The utility model is described in detail below with reference to the following figures and embodiments:

fig. 1 shows a dynamic balance adjustable grinding tool rest, which comprises a tool shank 3, as shown in fig. 6, the bottom of the tool shank 3 is provided with a screw joint 32 integrally formed with the tool shank, a part above the screw joint 32 is an engagement part 31 with an inverted cone-shaped structure, the exterior of the engagement part 31 is sleeved with a fixing device 2 matched with the engagement part, the fixing device 2 is fixedly connected to the tool shank 3 through a nut 4 in threaded fit with the screw joint 32, and a grinding wheel 1 is fixedly connected to the fixing device 2; as shown in fig. 3, the end face of the grinding wheel 1 is a circular structure, a connecting hole 11 is formed in the center of the top of the grinding wheel, a limiting hole 12 which is vertically communicated with and concentric with the connecting hole 11 is formed in the center of the bottom of the grinding wheel, the diameter of the limiting hole 12 is larger than that of the connecting hole 11, and the connecting hole 11 and the limiting hole 12 which are vertically communicated are mutually matched and fixedly connected with the fixing device 2; the fixing device 2 is provided with a plurality of counterweight holes 225 which are circularly arrayed by taking the center of the end face as the circle center, and counterweight blocks matched with the counterweight holes 225 in shape are installed in the counterweight holes 225 according to the dynamic balance state of the grinding wheel 1.

As shown in fig. 4 and 5, in order to facilitate the connection and fixation between the fixing device 2 and the grinding wheel 1, the fixing device 2 is composed of an upper fixing block 21 and a lower fixing plate 22 which are sleeved and matched up and down, the upper fixing block 21 is clamped in the connecting hole 11, and the lower fixing plate 22 is arranged in the limiting hole 12; the center of the top of the upper fixing block 21 is provided with a handle connecting hole 211 matched with the structure of the connecting part 31, the position of the periphery close to the top is a first rib 216 in clamping fit with the outer side of the end face of the connecting hole 11, the position below the first rib 216 is a connecting part 215 in splicing fit with the connecting hole 11, the position below the connecting part 215 is a downwards-protruding plug-in connector 213, the diameter of the plug-in connector 213 is smaller than that of the connecting part 215, the center of the end face of the plug-in connector is provided with a positioning hole 212 vertically communicated with the handle connecting hole 211, the nut 4 is arranged in the positioning hole 212 and in clearance fit with the positioning hole 212, the bottom screw connector 32 of the handle 3 inserted in the handle connecting hole 211 is positioned in the positioning hole 212, and the handle 3 is fixedly connected to the upper fixing block 21 through the nut 4 in the positioning hole 212 and in threaded fit with the screw connector 32; the center of the end face of the lower fixing plate 22 is provided with a plug-in hole 221 which is communicated up and down, the plug-in hole 221 is in sleeve fit with the plug-in connector 213, a clamping protrusion 223 which is in plug fit with the connecting hole 11 is arranged at the position, close to the top, of the periphery of the lower fixing plate 22, a second retaining edge 224 which is in clearance fit with the limiting hole 12 is arranged at the position, below the clamping protrusion 223, of the periphery of the lower fixing plate 22, the diameter of the second retaining edge 224 is larger than that of the clamping protrusion 223, and the balance weight hole 225 is arranged at the outer side of the plug-in hole 221 at the bottom of the lower fixing plate 22.

As shown in fig. 2, in order to facilitate connection and detachment between the upper fixing block 21, the lower fixing plate 22 and the grinding wheel 1, a positioning screw hole 214 is provided at a position of the upper fixing block 21 at the bottom of the connecting portion 215, a countersunk hole 222 corresponding to the positioning screw hole 214 in number and position is provided on the lower fixing plate 22, the countersunk hole 222 is a through hole, the upper fixing block 21 and the lower fixing plate 22 corresponding to each other in the up-down direction and in the sleeved fit are connected with each other by a bolt passing through the countersunk hole 222 and the positioning screw hole 214, and the upper fixing block 21 and the lower fixing plate 22 are fixedly connected with the grinding wheel 1.

As shown in fig. 7, in order to facilitate the matching with the screw joint 32 on the tool holder 3 and the adjustment, the end surface of the nut 4 is in a circular structure, a threaded connection hole 41 which is communicated up and down is formed in the center of the nut, and the threaded connection hole 41 is in threaded matching with the screw joint 32; the bottom of the nut 4 is provided with an adjusting hole 42 with a downward opening at the position outside the threaded connecting hole 41.

In order to facilitate the rotation of the nut 4, at least two adjusting holes 42 are arranged at equal intervals by taking the center of the nut 4 as a circle center, and the nut 4 can be adjusted by a specific nut adjusting wrench 7; as shown in fig. 8, the nut adjustment wrench 7 is provided with protrusions 71 corresponding to the number and positions of the adjustment holes 42 on the nut 4, the protrusions 71 are inserted into the adjustment holes 42, and the nut 4 can be synchronously driven to rotate by rotating the nut adjustment wrench 7 through the protrusions 71 and the adjustment holes 42 which are matched with each other, so that the nut 4 and the screw joint 32 can be conveniently disassembled.

Specifically, when the fixing device 2 is connected with the grinding wheel 1, the upper fixing block 21 is firstly clamped on the outer side of the top of the grinding wheel 1 through the connecting hole 11, the connecting part 215 on the upper fixing block 21 is inserted into the connecting hole 11, the inserting joint 213 penetrates through the connecting hole 11 and is positioned in the limiting hole 12, then the lower fixing plate 22 is installed in the limiting hole 12, the inserting joint 221 on the lower fixing plate 22 is inserted and matched with the inserting joint 213, the clamping protrusion 223 is inserted into the connecting hole 11, then the upper fixing block 21 and the lower fixing plate 22 are fixedly connected together through the bolt penetrating through the countersunk hole 222 and the corresponding positioning screw hole 214, the grinding wheel 1 is clamped and fixed through the first retaining edge 216 on the upper fixing block 21 and the second retaining edge 224 on the lower fixing plate 22, and the connection and fixation between the grinding wheel 1 and the fixing device 2 are realized; then, the grinding wheel 1 mounted with the fixing device 2 is placed on a dynamic balance adjusting device for dynamic balance adjustment. As shown in fig. 9, the dynamic balance adjusting device is composed of a correcting table 5 and a correcting balance bar 6 movably connected with the correcting table 5, the top of the correcting table 5 is provided with a groove matched with the correcting balance bar 6, and the correcting balance bar 6 is placed in the groove and can rotate; as shown in fig. 10, a connecting portion 62 which is matched with the shank connecting hole 211 is arranged at the middle part of the correcting balance bar 6, a fixing portion 63 is arranged at the lower end of the connecting portion 62, the portions at the two ends of the connecting portion 62 and the fixing portion 63 are polished rods 61, the connecting portion 62 and the fixing portion 63 are integrally formed and coaxially arranged, and external threads matched with the nuts 4 are arranged outside the fixing portion 63; as shown in fig. 11, when the grinding wheel 1 is subjected to dynamic balance correction, the correcting balance rod 6 is inserted into the shank connecting hole 211 in the center of the fixing device 2, at this time, the fixing device 2 is fixedly connected with the grinding wheel 1, the connecting part 62 on the correcting balance rod 6 is inserted and matched with the shank connecting hole 211, the fixing part 63 is located in the positioning hole 212, and then the nut 4 is screwed and fixed on the fixing part 63 through the nut adjusting wrench 7, so that the fixing device 2 and the correcting balance rod 6 are connected and fixed; then a correcting balance rod 6 is placed on a correcting table 5, the correcting balance rod 6 can be rotated to detect the dynamic balance state of the grinding wheel 1 when rotating, an adaptive balancing weight is arranged in a balancing hole 225 according to the detection state of the grinding wheel 1, the dynamic balance of the grinding wheel 1 is adjusted through the balancing weight, the correcting balance rod 6 is removed after the dynamic balance adjustment of the grinding wheel 1, then a knife handle 3 is installed on a fixing device 2, a connecting part 31 on the knife handle 3 is in inserting fit with a knife handle connecting hole 211, a screw joint 32 is fixedly connected through a nut 4 to realize the connection and fixation between the knife handle 3 and the fixing device 2, a knife rest with the grinding wheel is conveniently installed on a numerical control machine spindle through the knife handle 3, and during work, the horizontal and vertical stepping motor of the machine spindle is controlled to move up and down and left and right through a CNC editing program to further control the position of a grinding knife rest on the machine spindle, and control the position of a grinding edge of the grinding wheel, and the workpiece to be ground is ground, so that grinding scraps are prevented from being accumulated on the grinding wheel 1.

The grinding tool rest with adjustable dynamic balance can be installed on a numerical control lathe spindle, the CNC editing program is used for controlling the vertical stepping motor of the lathe spindle to move up and down, and further the position of a grinding wheel grinding cutting edge is controlled.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a grinding knife rest that dynamic balance can be debugged, has handle of a knife (3), handle of a knife (3) bottom have rather than integrated into one piece's screwed joint (32), the position that is located screwed joint (32) top is linking portion (31) of back taper structure, its characterized in that: the outer part of the joining part (31) is sleeved with a fixing device (2) matched with the joining part, the fixing device (2) is fixedly connected to the cutter handle (3) through a nut (4) in threaded fit with a threaded joint (32), and the fixing device (2) is fixedly connected with a grinding wheel (1); the end face of the grinding wheel (1) is of a circular structure, a connecting hole (11) is formed in the center of the top of the grinding wheel, a limiting hole (12) which is vertically communicated with and concentric with the connecting hole (11) is formed in the center of the bottom of the grinding wheel, the diameter of the limiting hole (12) is larger than that of the connecting hole (11), and the connecting hole (11) and the limiting hole (12) which are vertically communicated are matched with and fixedly connected with the fixing device (2); the fixing device (2) is provided with a plurality of counterweight holes (225) which are circularly arrayed by taking the center of the end face as the circle center, and counterweight blocks matched with the counterweight holes in shape are installed in the counterweight holes (225) according to the dynamic balance state of the grinding wheel (1).

2. The dynamically balanced adjustable grinding blade holder of claim 1, wherein: the fixing device (2) is composed of an upper fixing block (21) and a lower fixing plate (22) which are in upper-lower sleeve fit with each other, the upper fixing block (21) is clamped in the connecting hole (11), and the lower fixing plate (22) is arranged in the limiting hole (12); go up fixed block (21) top center and be provided with handle of a knife hole (211) anastomotic with linking portion (31) structure, the position that the periphery is close to the top be with connecting hole (11) terminal surface outside joint complex first flange (216), be located first flange (216) below position be with connecting hole (11) grafting complex connecting portion (215), the position that is located connecting portion (215) below is bellied bayonet joint (213) downwards, the diameter of bayonet joint (213) is less than the diameter of connecting portion (215), its terminal surface center be provided with handle of a knife connects locating hole (212) that communicates from top to bottom in hole (211), nut (4) set up in locating hole (212), its and locating hole (212) clearance fit, its bottom screwed joint (32) of handle of a knife (3) of pegging graft in handle of a knife hole (211) are located in locating hole (212), nut (3) through fixed with screwed joint (32) screw thread fit's nut (4) in locating hole (212) Is connected with the upper fixed block (21); the center of the end face of the lower fixing plate (22) is provided with an inserting hole (221) which is communicated up and down, the inserting hole (221) is matched with the inserting connector (213) in a sleeved mode, a clamping protrusion (223) which is matched with the connecting hole (11) in an inserting mode is arranged at the position, close to the top, of the periphery of the lower fixing plate (22), a second rib (224) which is in clearance fit with the limiting hole (12) is arranged at the position below the clamping protrusion (223), the diameter of the second rib (224) is larger than that of the clamping protrusion (223), and the counterweight hole (225) is arranged on the outer side of the inserting hole (221) in the bottom of the lower fixing plate (22).

3. A dynamically balanced adjustable grinding blade holder according to claim 2, wherein: the grinding wheel fixing device is characterized in that a positioning screw hole (214) is formed in the position, located at the bottom of the connecting portion (215), of the upper fixing block (21), a counter bore (222) corresponding to the number and the position of the positioning screw hole (214) up and down is formed in the lower fixing plate (22), the counter bore (222) is a through hole, the upper fixing block (21) and the lower fixing plate (22) which correspond up and down and are in sleeved fit with each other penetrate through the counter bore (222) through bolts and are in threaded connection with the positioning screw hole (214), and the upper fixing block (21) and the lower fixing plate (22) are fixedly connected with a grinding wheel (1).

4. The dynamically balanced adjustable grinding blade holder of claim 1, wherein: the end face of the nut (4) is of a circular structure, the center of the nut is provided with a threaded connecting hole (41) which is communicated up and down, and the threaded connecting hole (41) is in threaded fit with the screw joint (32); the bottom of the nut (4) is provided with an adjusting hole (42) with a downward opening at the position outside the threaded connecting hole (41).

5. The dynamically balanced adjustable grinding blade holder of claim 4, wherein: the number of the adjusting holes (42) is at least two, and the adjusting holes are arranged at equal intervals by taking the center of the nut (4) as the circle center.