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CN-118046232-B - Positioning mechanism for tool machine accessory holder

CN118046232BCN 118046232 BCN118046232 BCN 118046232BCN-118046232-B

Abstract

A locating mechanism for the clamping seat of tool unit is composed of a base with the first oil pressure channel, an external ring seat with the second oil pressure channel, an angle toothed disk set consisting of lower and upper toothed disks, an internal ring seat with the internal ring seat, a drive toothed disk set consisting of lower and upper driven toothed disks, a bearing seat with bearing seat in the internal ring seat and rotating with internal ring seat, and a control unit for switching the engaged state between said fixed and drive toothed disk sets. The invention has the effect of improving the processing precision.

Inventors

  • LIU XINGRONG

Assignees

  • 吉辅企业有限公司

Dates

Publication Date
20260508
Application Date
20231116
Priority Date
20221116

Claims (5)

  1. 1. The utility model provides a machine tool accessory holder positioning mechanism which characterized in that, it includes: a base, which is ring-shaped and is provided with a first oil pressure channel, and the inner edge of the top side of the base is concavely provided with a first concave part; The outer ring seat is sleeved in the base in a relatively movable manner, a first shoulder part is arranged on the outer edge of the top side of the outer ring seat in an extending manner, a first oil pressure space is formed by the first shoulder part and the first concave part together and used for storing the oil pressure input from the first oil pressure channel, a second concave part is concavely arranged on the inner edge of the top side of the outer ring seat, and a second oil pressure channel is further arranged on the outer ring seat; The fixed angle fluted disc group comprises a fixed angle lower fluted disc and a corresponding fixed angle upper fluted disc, the fixed angle lower fluted disc is fixedly arranged on the top surface of the outer ring seat and can be meshed with the fixed angle upper fluted disc along with the driving of the outer ring seat; The inner ring seat is sleeved in the outer ring seat in a relatively movable manner, a second shoulder part is arranged on the outer edge of the top side of the inner ring seat in an extending manner, and a second oil pressure space is formed by the second shoulder part and the second concave part together and used for storing the oil pressure input from the second oil pressure channel; the driving fluted disc group comprises a driving lower fluted disc and a driving upper fluted disc which is correspondingly arranged, and the driving lower fluted disc is fixedly arranged on the top surface of the inner ring seat and can be meshed with the driving upper fluted disc along with the driving of the inner ring seat; A bearing seat for clamping the fittings of the machine tool, the bearing seat being sleeved in the inner ring seat and being rotatable together with the inner ring seat, and When the meshing state of the driving fluted disc set is switched to the meshing state of the driving fluted disc set, the oil pressure is firstly input from the second oil pressure channel, so that the oil pressure in the second oil pressure space lifts the inner annular seat, the driving lower fluted disc is further driven to mesh with the driving upper fluted disc, the oil pressure is released from the first oil pressure channel after a preset time passes, the outer annular seat is sunk to release the meshing relationship of the driving fluted disc set, and when the meshing state of the driving fluted disc set is switched to the meshing state of the driving fluted disc set, the oil pressure is firstly input from the first oil pressure channel, so that the oil pressure in the first oil pressure space lifts the outer annular seat, the fixed angle lower fluted disc is further driven to mesh with the fixed angle upper fluted disc, and the oil pressure is released from the second oil pressure channel after a preset time passes, so that the inner annular seat is sunk to release the meshing relationship of the driving fluted disc set.
  2. 2. The machine tool accessory holder positioning mechanism of claim 1, wherein a plurality of round holes are formed between the inner ring seat and the bearing seat in a surrounding arrangement, and a guide pin is arranged in each of the plurality of round holes, so that the bearing seat can only slide up and down relative to the inner ring seat and cannot rotate relative to the inner ring seat.
  3. 3. The machine tool accessory holder positioning mechanism of claim 1, wherein the top inner edge of the outer ring seat is provided with a protruding part, the top surface of the inner ring seat is provided with a protruding part, and a reset element is arranged between the protruding part and the protruding part.
  4. 4. The machine tool accessory holder positioning mechanism of claim 1, wherein the inlet end of the first oil pressure channel is formed in the bottom surface of the base, and the outlet end of the first oil pressure channel is communicated with the first oil pressure space.
  5. 5. The machine tool accessory holder positioning mechanism of claim 1, wherein the inlet end of the second oil pressure channel is formed in the bottom surface of the outer ring seat, and the outlet end of the second oil pressure channel is communicated with the second oil pressure space.

Description

Positioning mechanism for tool machine accessory holder Technical Field The invention relates to an angle positioning mechanism of a fitting holder in a machine tool, in particular to a positioning mechanism capable of enabling at least one fluted disc group to be meshed and avoiding angle deviation of a bearing seat. Background In a conventional machine tool, a clamping seat (e.g., a bearing seat) for clamping an accessory is usually mounted on a positioning mechanism, the positioning mechanism includes a fixed-angle set of gears and a variable-angle set of driving gears, if the positioning angle of the accessory (e.g., an object to be machined, a tool or a milling head) is to be fixed, the positioning mechanism connects the bearing seat and the fixed-angle set of gears, so that the angle of the bearing seat is fixed while the fixed-angle set of gears is maintained in engagement, and if the positioning angle of the accessory is to be adjusted in the machining process, the engagement of the fixed-angle set of gears needs to be released, the bearing seat and the fixed-angle set of gears are disconnected and connected with the driving gears, so that the bearing seat rotates along with the driving gears, the processor can indirectly rotate the bearing seat to a designated angle by rotating the driving gears, and finally, after the adjustment of the angle is completed, the connection of the bearing seat and the driving gears is released, and the bearing seat is connected with the fixed-angle set of gears again. When the bearing seat is to be switched to the fixed angle fluted disc and the connection relation between the fluted disc and the driving fluted disc is usually achieved by using a two-way valve (such as a two-way piston and an oil pressure electromagnetic valve), however, the switching stroke of the bearing seat between the two fluted discs comprises a small idle stroke, in which the bearing seat is not connected with any fluted disc set, in other words, the bearing seat is in a separated state with the fixed angle fluted disc set and the driving fluted disc set, because of the additional positioning effect brought about when the fluted disc set is connected, the bearing seat and the fluted disc set are fixed or synchronously rotated, the bearing seat is less prone to offset in angle, when the bearing seat is separated from the two fluted disc sets, if the weight of a clamped accessory is excessive or the dead weight of the bearing seat is uneven, the bearing seat is extremely likely to deflect even, and the accessory is likely to slip off, therefore, the user also needs to conduct angle correction even to reclamping the accessory, if the angle offset occurs and the accessory cannot be found timely, the processed object is wasted in a defect, the manpower, the material and the time are wasted, and the space is still improved. In view of the above, it is an object of the present invention to improve the above-mentioned problems. Disclosure of Invention The invention aims to provide a tool machine accessory clamping seat positioning mechanism, a bearing seat is connected with a fixed angle fluted disc set and a driving fluted disc set at the same time, and two independent control valves respectively correspond to the two fluted disc sets to control the meshing relationship of the fluted disc sets, so that the meshing processes of the fixed angle fluted disc set and the driving fluted disc set are independent, the switching meshing relationship of the two fluted disc sets is not limited to be synchronous, the bearing seat can be always connected with at least one meshed fluted disc set in the switching process, the idle process is not existed, the bearing seat is not deviated due to uneven dead weight or accessory weight, the risk of angle deviation is reduced when the meshing relationship is switched, and the machining precision of the tool machine is improved. In order to achieve the above-mentioned object, the present invention provides a positioning mechanism for a tool machine accessory holder, comprising: the base is annular and provided with a first oil pressure channel, and the inner edge of the top side of the base is concavely provided with a first concave part; The outer ring seat is sleeved in the base in a relatively movable manner, a first shoulder part is arranged on the outer edge of the top side of the outer ring seat in an extending manner, an annular first oil pressure space is formed by the first shoulder part and the first concave part together and used for storing the oil pressure input from the first oil pressure channel, a second concave part is concavely arranged on the inner edge of the top side of the outer ring seat, and a second oil pressure channel is further arranged on the outer ring seat; The fixed angle fluted disc group comprises a fixed angle lower fluted disc and a corresponding fixed angle upper fluted disc, the fixed angle lower fluted disc is fixedly arranged on the