CN114932269B - Numerical control internal tooth gear grinding machine - Google Patents
Numerical control internal tooth gear grinding machine Download PDFInfo
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- CN114932269B CN114932269B CN202210847602.5A CN202210847602A CN114932269B CN 114932269 B CN114932269 B CN 114932269B CN 202210847602 A CN202210847602 A CN 202210847602A CN 114932269 B CN114932269 B CN 114932269B
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- internal tooth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
- B23F5/02—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/005—Devices for removing chips by blowing
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- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention relates to the technical field of internal tooth machining and discloses a numerical control internal tooth gear grinding machine which comprises a machine table, wherein one end of the machine table is provided with a Y-axis guide rail, a moving seat, a top table and a support, the other end of the machine table is provided with a supporting seat, an index plate and a gear clamp, and the free end of the support shaft is rotatably provided with a grinding wheel; the gear clamp comprises a front seat and a rear seat which are integrally arranged, wherein a plurality of auxiliary pressing plates are arranged on the inner wall of the top ring and the top ring which are transversely arranged in the front seat in a sliding manner, and right-angle grooves are formed in the end parts of the plurality of top cones and the top cones which are arranged in the rear seat in a sliding manner. According to the invention, through the arrangement of the tip cone and the auxiliary pressure plate, effective clamping can be realized on the gear blanks with different wall thicknesses, different inner diameters and different outer diameters, after the gear blanks are simultaneously pressed and positioned by the tip cones and the auxiliary pressure plates on the two sides of the gear blanks, the subsequent processing of the gear blanks is more stable, and waste scraps can be quickly discharged when a grinding wheel grinds the gear in the gear blanks, so that the forming quality of internal teeth is further ensured.
Description
Technical Field
The invention relates to the technical field of internal tooth machining, in particular to a numerical control internal tooth gear grinding machine.
Background
With the advance of industrial modernization process, the manufacturing industry develops towards mechanization and automation, and the requirement on the degree of refinement is high particularly for precise products. Currently, in the machining of gears, partial automation has been achieved. The gear processing can be divided into internal tooth processing and external tooth processing, and the processing technology of the gear can be divided into gear grinding, gear milling, gear shaving, gear hobbing, gear shaping and gear honing. To the process of grinding the internal teeth, chinese patent with patent publication No. CN111975119A proposes a gear grinding machine, comprising: the grinding machine comprises a base, a workpiece mechanism and a grinding wheel mechanism are arranged on the base, the workpiece mechanism is arranged on the left side of the grinding wheel mechanism, and the workpiece mechanism is used for mounting a workpiece to be machined; the grinding wheel mechanism comprises: the grinding wheel mounting base is mounted on the base; the external tooth mounting seat is used for mounting an external tooth grinding wheel so as to grind and process an external gear; the internal tooth mounting seat is used for mounting an internal tooth grinding wheel to grind and process an internal gear; the outer tooth mounting base is movably mounted on the grinding wheel mounting base, and a working position and an avoiding position are arranged on the moving stroke of the outer tooth mounting base; the internal tooth mounting seat is movably mounted on the grinding wheel mounting base, and a working position and an avoiding position are arranged on the movable stroke of the internal tooth mounting seat.
When gear grinding is carried out on the gear blank, the grinding wheel is required to enter the gear blank, the gear grinding is carried out on the top point position of the inner wall of the gear blank through the inlet and outlet of the grinding wheel, then the gear blank is subjected to angle adjustment and then gear grinding is carried out again, and the process is continued until finally internal teeth are formed. In the machining process, a clamp for clamping the gear blank needs to fix the gear blank from the outer side, and meanwhile, the grinding wheel needs to be prevented from impacting a machine tool part in the reciprocating motion. However, in practical application, because the tooth blank wall is thin, the machining position is stressed at a single point, and only the machining point can bear large impact force, and the impact force is from the main force in the grinding wheel feeding direction and the component force in the vertical direction. In the gear grinding process, if the gear blank cannot be effectively fixed, the gear blank can be damaged in the process forming process.
Disclosure of Invention
The invention aims to provide a numerical control internal tooth gear grinding machine which has the advantages of quick positioning, effective clamping, sufficient grinding wheel machining space and quick discharge of scraps.
The invention is realized by the following technical scheme:
a numerical control internal tooth gear grinding machine comprises a machine table, a Y-axis guide rail arranged on the machine table, and a moving seat sliding along the Y-axis guide rail, wherein the machine table is also provided with a supporting seat, an index plate rotationally arranged on the supporting seat, and a gear clamp arranged on the index plate; gear anchor clamps include integrative front stall and the back seat that sets up and actuating mechanism, lateral sliding is provided with the apical ring just in the front stall the inner wall of apical ring slides to its central point and is provided with a plurality of auxiliary pressing plates, oblique sliding is provided with a plurality of apiculates just in the back seat the right angle groove has been seted up to the tip of apiculate, actuating mechanism can drive a plurality of auxiliary pressing plates and a plurality of apiculates and be close to and compress tightly the tooth base from tooth base both sides.
Further setting as follows: the gear clamp comprises a front ring rotating in the front seat, a plurality of front end sliding grooves are formed in the inner wall of the front seat, front end sliding blocks are arranged in the front end sliding grooves in a sliding mode, a threaded section matched with the front end sliding blocks is arranged on the inner wall of the front ring, and the front end sliding blocks are all fixed on the peripheral wall of the top ring; the rear seat is characterized by further comprising a rear ring rotating inside the rear seat, a plurality of rear end sliding grooves are formed in the inner wall of the rear seat, rear end sliding blocks are arranged in the rear end sliding grooves in a sliding mode, thread sections matched with the rear end sliding blocks are arranged on the inner wall of the rear ring, and the tip cones and the rear end sliding blocks are in one-to-one correspondence and are fixed with each other; actuating mechanism is including being located the front bezel with control seat between the back seat, the control seat internal rotation is provided with the power shaft, be fixed with two axle sleeves on the power shaft just the cover is equipped with power gear on the axle sleeve, two power gear respectively with the outer wall intermeshing of preceding ring sum back ring, axle sleeve perisporium elasticity inlays and is equipped with a plurality of location pearls, set up in the middle of the power gear with axle sleeve and a plurality of the flower groove of location pearl joint adaptation.
Further setting the following steps: the outer wall of the shaft sleeve is provided with a plurality of grooves, return springs are arranged in the grooves, the bottoms of the positioning beads are located in the grooves, the bottoms of the positioning beads are fixed with the return springs, the tops of the positioning beads are located outside openings of the grooves, and a driving motor in transmission connection with the power shaft is arranged in the control base.
Further setting the following steps: the both ends of axle sleeve all are provided with and support outer edge and two it is corresponding to support outer edge centre gripping the both sides of power gear.
Further setting the following steps: the inner wall of the top ring is provided with a plurality of longitudinal sliding grooves along the circumferential direction, the auxiliary pressing plate slides in the longitudinal sliding grooves correspondingly, and the top ring faces one side of the tip cone and is embedded with a pressure sensor.
Further setting as follows: an air blower is arranged on the top table, air outlet pipes are arranged at the free end of the supporting shaft and positioned on two sides of the grinding wheel, and the two air outlet pipes are communicated with the air blower; the outer wall of the top ring is provided with a plurality of air exchange openings, and sealing elements are arranged at the openings of the front end sliding groove and the rear end sliding groove.
Further setting the following steps: the tip cones correspond to the auxiliary pressure plates one by one, and the number of the tip cones is 6-8.
Further setting as follows: the grinding wheel grinding machine is characterized in that a Z-axis guide rail is vertically arranged on the movable seat, an X-axis guide rail is arranged on the Z-axis guide rail in a sliding mode, the jacking table slides on the X-axis guide rail, and a power motor for driving the grinding wheel to rotate is arranged on the jacking table.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) The two sides of the gear blank are clamped through the tip cone and the auxiliary pressure plate, when the gear blank is fixed, the tip cone can offset impact force generated during grinding wheel machining to a certain extent by adopting a pressing mode in an oblique angle direction on the gear blank, and the auxiliary pressure plate can ensure the stability and no shaking during gear blank machining in the pressing process of the surface of the gear blank, so that the stability and safety in internal tooth forming are ensured;
(2) The driving motor can simultaneously drive the front ring and the rear ring to rotate through the power shaft, the tip cone and the auxiliary pressing plate can sequentially compress two sides of the gear blank, and the two power gears can independently run without interference through the matching of the positioning beads which are elastically arranged and the flower grooves in the power gears;
(3) Because the tip cone and the auxiliary pressure plate can be independently adjusted, the gear clamp can effectively clamp and position the gear blank on the premise of stable pressing force aiming at the gear blanks with different wall thicknesses, different inner diameters and different outer diameters;
(4) The periphery of the gear blank is clamped through the tip cone and the auxiliary pressure plate, the gear blank is fixed in the middle of the front seat, the supporting shaft can drive the grinding wheel to extend into the middle of the gear blank, and a reserved space in the middle of the rear seat also provides a movement space for the reciprocating movement of the supporting shaft, so that the collision between the supporting shaft and the machine body is avoided;
(5) Through the continuous air supply of the gear grinding machining point of the air outlet pipe for the grinding wheel and the gear blank, the sweeps generated by gear grinding can be quickly cleaned and taken away from the front seat by high-speed air, so that the influence of the sweeps on gear grinding machining of the gear blank is reduced, and the forming quality of the internal teeth is guaranteed.
Drawings
FIG. 1 is a first general structural diagram of the present invention;
FIG. 2 is a second overall structural schematic of the present invention;
FIG. 3 is a schematic view of the construction of the gear clamp of the present invention;
FIG. 4 is a partial cross-sectional view of the gear clamp of the present invention;
FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;
FIG. 6 is an enlarged partial view of portion B of FIG. 5;
figure 7 is a schematic view of the tooth grinding process.
Reference numerals are as follows: 1. a machine platform; 2. a Y-axis guide rail; 3. a movable seat; 4. a supporting seat; 5. an index plate; 6. a gear clamp; 7. a top stage; 8. a support shaft; 9. a grinding wheel; 10. a blower; 11. an air outlet pipe; 12. a Z-axis guide rail; 13. an X-axis guide rail; 14. a power motor; 100. a front seat; 101. a rear seat; 102. a top ring; 103. an auxiliary pressure plate; 104. a tip cone; 105. a right-angle groove; 106. a front ring; 107. a front end chute; 108. a front end slider; 109. a rear ring; 110. a rear end chute; 111. a rear end slider; 112. a control seat; 113. a power shaft; 114. a shaft sleeve; 115. a power gear; 116. positioning the beads; 117. a flower trough; 118. a groove; 119. a return spring; 120. a drive motor; 121. a supporting outer edge; 122. a longitudinal chute; 123. a pressure sensor; 124. an air exchange port; 125. and a seal.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1 and 2, the numerical control internal tooth gear grinding machine disclosed by the invention comprises a rectangular machine table 1, a Y-axis guide rail 2 is fixed on the upper surface of the machine table 1 along the length direction of the machine table, a movable seat 3 matched with the Y-axis guide rail 2 is arranged on the upper surface of the machine table 1 in a sliding manner, and a first motor is arranged in the movable seat 3 and drives the movable seat 3 to slide along the Y-axis guide rail 2 by adopting a gear transmission mode. Move and vertically be fixed with Z axle guide rail 12 on the seat 3, move 3 side and slide and be provided with the X axle guide rail 13 with Z axle guide rail 12 adaptation, move 3 tops of seat and be provided with the second motor and adopt lead screw drive mode to slide along Z axle guide rail 12 direction with drive X axle guide rail 13. The X-axis guide rail 13 is provided with a top platform 7 in a sliding manner along the track direction, and the end part of the X-axis guide rail 13 is fixed with a third motor and adopts a lead screw transmission mode to drive the top platform 7 to slide along the X-axis guide rail 13. Referring to the XYZ coordinate system in fig. 2, the top stage 7 is adjusted in multiple directions to move freely in a three-dimensional space. One side of top platform 7 is fixed with back shaft 8, and back shaft 8 is on a parallel with the upper surface of board 1, and the free end of back shaft 8 is embedded to have emery wheel 9 and emery wheel 9's top to appear in the back shaft 8 outside, and emery wheel 9 is rotatable in the tip of back shaft 8. The supporting shaft 8 is hollow inside, a transmission belt is arranged in the inner space, a power motor 14 is fixed on the top table 7, the power motor 14 drives the transmission belt to move through gear transmission, and the transmission belt drives the grinding wheel 9 to rotate.
Referring to fig. 1, the one end of 1 length direction of board is fixed with supporting seat 4, and supporting seat 4 is provided with graduated disk 5 towards one side rotation that removes seat 3, and supporting seat 4 internal fixation has fourth motor and the encoder that drives the accurate rotatory little angle of graduated disk 5. And a gear clamp 6 for clamping the gear blank is clamped and installed on one side of the dividing disc 5 facing the movable seat 3. The back shaft 8 can be accurate stretch into to gear clamp 6 under the drive of a plurality of power supplies to make emery wheel 9 can be to the real-time gear grinding processing of tooth base. The first motor, the second motor, the third motor and the fourth motor are all servo motors.
Referring to fig. 3 and 5, the gear clamp 6 includes a front seat 100 and a rear seat 101 integrally provided, and the front seat 100 and the rear seat 101 are cylindrical. The department is straight face for lining up structure and inner wall in the middle of the front stall 100, and the department slides along its axis direction in the middle of the front stall 100 is provided with the apical ring 102, and a plurality of vertical spouts 122 have been seted up to the inner wall of apical ring 102, and a plurality of vertical spouts 122 distribute along the circumference direction annular of apical ring 102 inner wall, and equal angular interval between the center of all vertical spouts 122 equal directional apical ring 102 and each other slides along its spout direction in the vertical spout 122 and is provided with the assistance clamp plate 103. Adopt interference fit between supplementary clamp plate 103 and the vertical spout 122, supplementary clamp plate 103 through with vertical spout 122 inner wall between frictional force guarantee its gliding steady, in this embodiment, can adopt the mode of artifical stirring to promote the position control of supplementary clamp plate 103, the tooth base is compressed tightly the in-process, supplementary clamp plate 103 tip position is between the internal diameter and the external diameter of tooth base. One side of the auxiliary pressure plate 103 facing the rear seat 101 and one side of the top ring 102 facing the rear seat 101 are in the same plane, so that the auxiliary pressure plate 103 can adjust a clamping point according to the outer diameter of the gear blank, accurate clamping is realized, and the phenomenon that the grinding wheel 9 enters and exits during gear grinding is prevented from being hindered. Department is the conical surface for link up structure and inner wall in the middle of the back seat 101, and the opening diameter that back seat 101 is close to the tip of front seat 100 is less than the opening diameter of front seat 100, and the department slides along its inclined plane direction in the middle of the back seat 101 and is provided with a plurality of tip cones 104, and tip cone 104 is annular array and distributes in back seat 101, and right angle groove 105 has been seted up towards the tip of apical ring 102 to tip cone 104, and the direction of sliding of all tip cones 104 all intersects in a point. In the present embodiment, the tip cones 104 correspond to the auxiliary pressure plates 103 one by one, and the tip cones 104 are preferably six. After the gear blank is sent into the gear clamp 6, one side of the gear blank can be clamped in the right-angle grooves 105 of all the tip cones 104, the other side of the gear blank is pressed tightly through all the auxiliary pressing plates 103, the gear blank is accurately fixed, and due to the fact that the gear blank is clamped in the center of the front seat 100, a through space is formed in the middle of the gear blank, and the grinding wheel 9 can conveniently enter the gear blank to grind the gear. Referring to fig. 7, the pressing force direction of the tip cone 104 against the tooth blank and the tooth grinding impact force direction of the grinding wheel 9 against the tooth blank may be in the form of an acute angle of a same straight line or a small angle to some extent, so as to offset the impact force of the grinding wheel 9 to the maximum extent, and the solid arrow in fig. 7 indicates the impact force direction.
Referring to fig. 4 and 5, the gear clamp 6 further includes a front ring 106, an outer wall of the front ring 106 has an annular partition and a tooth socket, an inner wall of the front ring 106 has a thread section, the interior of the front seat 100 is of a hollow structure, the front ring 106 is rotatably disposed inside the front seat 100, a plurality of front end sliding grooves 107 are disposed on the inner wall of the front seat 100 along a generatrix direction thereof, front end sliding blocks 108 are slidably disposed in the front end sliding grooves 107 along an opening direction thereof, the front end sliding blocks 108 are slidably engaged with the front end sliding grooves 107, threads adapted to the thread section of the inner wall of the front ring 106 are disposed on one side of the front seat 100 where the front end sliding blocks 108 are disposed, and one side of the front seat 100 where the front end sliding blocks 108 are disposed is fixed to a peripheral wall of the top ring 102. Gear clamp 6 still includes rear ring 109, rear ring 109's outer wall has annular wall and tooth's socket, rear ring 109's inner wall has the screw thread section, rear seat 101 is inside to be spatial structure and rear ring 109 rotation and sets up in the inside of rear seat 101, a plurality of rear end spout 110 have been seted up along its generating line direction on the rear seat 101 inner wall, it slides along its orientation of seting up in rear end spout 110 and is provided with rear end slider 111 and rear end spout 110 cooperation of sliding, one side that rear end slider 111 is located rear seat 101 is provided with the screw thread with rear ring 109 inner wall screw thread section adaptation, one side that rear end slider 111 is located the rear seat 101 outside is fixed connection with the tip cone 104 that corresponds. The length of the front end chute 107 is greater than the length of the rear end chute 110. Under the rotation of the front ring 106 and the rear ring 109, the front ring 106 pushes the six front sliders 108 to slide simultaneously, so as to drive the top ring 102 to move toward the rear seat 101, and the rear ring 109 pushes the six rear sliders 111 to slide simultaneously, so as to drive the six top cones 104 to move toward the front seat 100. Six auxiliary pressure plates 103 and six tip cones 104 clamp the gear blank from two sides, so that the gear blank with different wall thicknesses can be effectively fixed.
Referring to fig. 4, a driving mechanism is further disposed in the gear clamp 6, the driving mechanism includes a control base 112, the control base 112 is located between the front base 100 and the rear base 101 and fixed to the front base and the rear base, a power shaft 113 is rotatably disposed in the control base 112, and a rotation axis direction of the power shaft 113 is consistent with a center line direction of the top ring 102. Two shaft sleeves 114 are fixed on the power shaft 113, two power gears 115 are respectively sleeved on the two shaft sleeves 114, tooth grooves are formed in the end parts, close to each other, of the front ring 106 and the rear ring 109, the two power gears 115 are respectively meshed with the tooth grooves in the outer walls of the front ring 106 and the rear ring 109, a driving motor 120 is fixed in the control base 112, and the driving motor 120 is in transmission connection with the power shaft 113 through a coupler.
Referring to fig. 6, a plurality of positioning beads 116 are elastically embedded in the circumferential wall of the shaft sleeve 114, the positioning beads 116 are distributed on the circumferential wall of the shaft sleeve 114 in an annular array, and a flower groove 117 adapted to the shaft sleeve 114 and the plurality of positioning beads 116 in a clamping manner is formed in the middle of the power gear 115. The outer wall of the shaft sleeve 114 is provided with a plurality of grooves 118, a return spring 119 is fixed in each groove 118, and a corresponding positioning ball 116 is embedded in an opening of each groove 118. The bottom of the positioning ball 116 is located in the groove 118 and the bottom is fixed with the return spring 119, and the top of the positioning ball 116 is located outside the opening of the groove 118 and abuts against the inner wall of the flower groove 117 of the power gear 115. The two ends of the shaft sleeve 114 are fixed with supporting outer edges 121, and the two supporting outer edges 121 are clamped at two sides of the corresponding power gear 115. When the driving motor 120 drives the power shaft 113 to rotate, the two power gears 115 can be driven to rotate through the matching of the positioning beads 116 and the flower grooves 117, the two power gears 115 respectively drive the front ring 106 and the rear ring 109 to rotate, and then the six auxiliary pressing plates 103 and the six tip cones 104 are pushed to approach from two sides of the tooth blank. In the process of pressing the gear blank, the tip cone 104 is firstly abutted to the outer wall of the gear blank, the auxiliary pressure plate 103 is subsequently abutted to the outer wall of the gear blank, and in the process, the rear ring 109 stops rotating before the front ring 106 after being in place, so that the rotation and the stop of the two power gears 115 are also in sequence. By the arrangement of the elastic positioning balls 116, when the power gear 115 is subjected to a resistance greater than the elastic force of all the positioning balls 116, the power gear 115 can be idled without affecting the rotation of the other power gear 115.
Referring to fig. 5, a pressure sensor 123 is embedded in one side of the top ring 102 facing the top cone 104, and the pressure sensor 123 can be connected into a numerical control platform of the gear grinding machine, so as to monitor the pressing force of the gear blank, and precisely control the start and stop of the driving motor 120. In order to improve the sealing performance at the middle position between the front seat 100 and the rear seat 101, a sealing member 125 is disposed at the opening of each of the front end chute 107 and the rear end chute 110. The sealing member 125 may be an elastic stretch band or a foldable sealing cloth.
The tooth base can produce tiny sweeps at the gear grinding in-process, and the fineness of its processing can be influenced to the sweeps if remaining in the tooth's socket of tooth base, therefore the sweeps needs in time to be cleared up. Referring to fig. 2 and 3, an air blower 10 is fixed on the top table 7, air outlet pipes 11 are arranged at the free end of the supporting shaft 8 and located on two sides of the grinding wheel 9, the two air outlet pipes 11 are communicated with the air blower 10 through pipelines, an inclined angle is formed between each air outlet pipe 11 and the supporting shaft 8, and an air outlet of each air outlet pipe 11 finally points to a contact point between the grinding wheel 9 and a tooth blank. The outer wall of the top ring 102 is provided with a plurality of air exchanging ports 124, and the air exchanging ports 124 and the auxiliary pressing plates 103 are arranged in a staggered mode. With reference to fig. 7, after the high-speed air discharged from the air outlet pipe 11 is directly blown to the tooth grinding position of the grinding wheel 9, since the rear seat 101 is attached to the index plate 5, the air flow in the space in the middle of the rear seat 101 is weakened, the air in the space is relatively sealed, the air in the space in the middle of the front seat 100 is communicated with the outside air, the high-speed air is swirled from the upper side to the lower side in the space in the middle of the front seat 100 and is discharged from the air exchanging port 124 in the lower side, the high-speed air can flow along the inner wall of the front seat 100 and is discharged from the front seat 100, and the dotted arrow in fig. 7 indicates the air flow direction.
The working principle and the beneficial effects of the invention are as follows:
an operator firstly adjusts the positions of all auxiliary pressing plates 103 according to the outer diameter and the inner diameter of a gear blank, an annular clamping area formed by all the auxiliary pressing plates 103 covers the outer wall of the gear blank, the operator can clamp the gear blank firstly by using an auxiliary tool and send the gear blank into the middle of the front seat 100, the driving motor 120 is started, the driving motor 120 drives all the tip cones 104 and all the auxiliary pressing plates 103 to approach the gear blank from two sides of the gear blank simultaneously, in the process, the tip cones 104 contact the gear blank before the auxiliary pressing plates 103, when one end of the gear blank is clamped by all the tip cones 104, the auxiliary tool is taken out, and then the auxiliary pressing plates 103 tightly press the other end of the gear blank, so that the positioning of the gear blank is completed. The top table 7 drives the supporting shaft 8 to extend into the front seat 100, the grinding wheel 9 carries out gear grinding processing on the inner wall of the gear blank, and the action of the gear grinding processing is continuously repeated until the inner teeth are formed.
In the invention, the positioned tooth blank is simultaneously pressed by the tip cones 104 and the auxiliary pressure plates 103 on the two sides of the tooth blank, the pressing force of the tip cones 104 can offset the impact force of the grinding wheel 9, and the pressing force of the auxiliary pressure plates 103 can ensure the stability and no shaking of the tooth blank, so that the stability of the structure of the tooth blank is ensured while the high precision of the processing of the tooth blank is realized, and the quality of internal tooth forming is finally ensured. By adjusting the tip cone 104 and the auxiliary pressure plate 103, the invention can effectively clamp and position tooth blanks with different wall thicknesses, different inner diameters and different outer diameters, and the clamping force can effectively guarantee the tooth blanks with different sizes, thereby having high stability. When the gear blank is clamped and positioned, the gear blank is positioned in the middle of the front seat 100, and the supporting shaft 8 can directly extend into the middle of the gear blank because the tip cone 104 and the auxiliary pressure plate 103 are arranged on the periphery of the gear blank, and a reserved space in the middle of the rear seat 101 also provides a space for the reciprocating motion of the supporting shaft 8. The air outlet through the air outlet pipe 11 can be used for quickly cleaning the scraps generated by gear grinding and taking the scraps away from the front seat 100, so that the influence of the scraps on gear grinding of the gear blank is reduced.
The above description is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides a numerical control internal tooth gear grinding machine which characterized in that: the grinding wheel device comprises a machine table (1), a Y-axis guide rail (2) arranged on the machine table (1) and a moving seat (3) sliding along the Y-axis guide rail (2), wherein a supporting seat (4), an index plate (5) rotationally arranged on the supporting seat (4) and a gear clamp (6) arranged on the index plate (5) are further arranged on the machine table (1), a top table (7) is movably arranged on the moving seat (3), a supporting shaft (8) is arranged on one side, facing the index plate (5), of the top table (7), and a grinding wheel (9) capable of extending into the gear clamp (6) is rotatably arranged at the free end of the supporting shaft (8);
the gear clamp (6) comprises a front seat (100), a rear seat (101) and a driving mechanism which are integrally arranged, a top ring (102) is transversely arranged in the front seat (100) in a sliding mode, a plurality of auxiliary pressing plates (103) are arranged on the inner wall of the top ring (102) in a sliding mode towards the center point of the top ring, a plurality of top cones (104) are obliquely arranged in the rear seat (101) in a sliding mode, and right-angle grooves (105) are formed in the end portions of the top cones (104);
the gear clamp (6) comprises a front ring (106) rotating inside the front seat (100), a plurality of front end sliding grooves (107) are formed in the inner wall of the front seat (100), front end sliding blocks (108) are arranged in the front end sliding grooves (107) in a sliding mode, a threaded section matched with the front end sliding blocks (108) is arranged on the inner wall of the front ring (106), and the front end sliding blocks (108) are all fixed on the peripheral wall of the top ring (102);
the rear seat structure is characterized by further comprising a rear ring (109) rotating inside the rear seat (101), a plurality of rear end sliding grooves (110) are formed in the inner wall of the rear seat (101), rear end sliding blocks (111) are arranged in the rear end sliding grooves (110) in a sliding mode, threaded sections matched with the rear end sliding blocks (111) are arranged on the inner wall of the rear ring (109), and the tip cones (104) and the rear end sliding blocks (111) are in one-to-one correspondence and are fixed with each other;
the driving mechanism comprises a control seat (112) positioned between the front seat (100) and the rear seat (101), a power shaft (113) is rotationally arranged in the control seat (112), two shaft sleeves (114) are fixed on the power shaft (113), a power gear (115) is sleeved on each shaft sleeve (114), the two power gears (115) are meshed with the outer walls of the front ring (106) and the rear ring (109) respectively, a plurality of positioning beads (116) are elastically embedded in the peripheral wall of each shaft sleeve (114), and a flower groove (117) matched with the shaft sleeves (114) and the positioning beads (116) in a clamping manner is formed in the middle of each power gear (115);
the driving mechanism can drive a plurality of auxiliary pressing plates (103) and a plurality of tip cones (104) to approach from two sides of the gear blank and press the gear blank tightly.
2. A numerical control internal tooth grinding machine according to claim 1, characterized in that: the outer wall of the shaft sleeve (114) is provided with a plurality of grooves (118), return springs (119) are arranged in the grooves (118), the bottoms of the positioning beads (116) are located in the grooves (118), the bottoms of the positioning beads are fixed with the return springs (119), the tops of the positioning beads (116) are located outside openings of the grooves (118), and a driving motor (120) in transmission connection with the power shaft (113) is arranged in the control base (112).
3. A numerically controlled internal tooth grinding machine as claimed in claim 2, wherein: and two ends of the shaft sleeve (114) are respectively provided with a supporting outer edge (121), and the two supporting outer edges (121) are clamped at two sides corresponding to the power gear (115).
4. A numerical control internal tooth grinding machine according to claim 1, characterized in that: the inner wall of the top ring (102) is provided with a plurality of longitudinal sliding grooves (122) along the circumferential direction of the inner wall, the auxiliary pressing plate (103) slides in the longitudinal sliding grooves (122), and a pressure sensor (123) is embedded in one side, facing the tip cone (104), of the top ring (102).
5. A numerically controlled internal tooth grinding machine as claimed in claim 1, wherein: an air blower (10) is arranged on the top table (7), air outlet pipes (11) are arranged at the free end of the supporting shaft (8) and positioned on two sides of the grinding wheel (9), and the two air outlet pipes (11) are communicated with the air blower (10); the outer wall of the top ring (102) is provided with a plurality of air exchange openings (124), and sealing elements (125) are arranged at openings of the front end sliding groove (107) and the rear end sliding groove (110).
6. A numerical control internal tooth grinding machine according to any one of claims 1 to 5, characterized in that: the tip cones (104) correspond to the auxiliary pressure plates (103) one by one, and the number of the tip cones (104) is 6-8.
7. A numerical control internal tooth grinding machine according to claim 1, characterized in that: the grinding wheel grinding machine is characterized in that a Z-axis guide rail (12) is vertically arranged on the moving seat (3), an X-axis guide rail (13) is arranged on the Z-axis guide rail (12) in a sliding mode, the jacking table (7) slides on the X-axis guide rail (13), and a power motor (14) for driving the grinding wheel (9) to rotate is arranged on the jacking table (7).
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| CN202210847602.5A CN114932269B (en) | 2022-07-19 | 2022-07-19 | Numerical control internal tooth gear grinding machine |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115488443B (en) * | 2022-11-16 | 2023-03-24 | 拜锐孚(常州)精密机械有限公司 | Tooth-shaped positioning and milling device for production of planetary gear of speed reducer |
| CN116871605A (en) * | 2023-09-06 | 2023-10-13 | 溧阳市腾新机电设备有限公司 | Gear edge grinding and chamfering device |
| CN117047199B (en) * | 2023-10-12 | 2024-02-23 | 泰州凡羽精密齿轮制造有限公司 | Plane tooth processing machine |
| CN117381071B (en) * | 2023-12-12 | 2024-02-06 | 常州市南方驱动技术有限公司 | Numerical control internal tooth grinding machine and use method thereof |
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