CN112548693B - Workpiece centering device, peripheral grinding machine and workpiece positioning centering adjustment method - Google Patents
Workpiece centering device, peripheral grinding machine and workpiece positioning centering adjustment method Download PDFInfo
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- CN112548693B CN112548693B CN202011559128.3A CN202011559128A CN112548693B CN 112548693 B CN112548693 B CN 112548693B CN 202011559128 A CN202011559128 A CN 202011559128A CN 112548693 B CN112548693 B CN 112548693B
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- 238000000227 grinding Methods 0.000 title claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000011664 signaling Effects 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 17
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000003801 milling Methods 0.000 claims description 11
- 238000003754 machining Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 description 14
- 230000033001 locomotion Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0023—Other grinding machines or devices grinding machines with a plurality of working posts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/06—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by liquid or gas pressure only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a workpiece centering device, a peripheral grinding machine and a workpiece positioning centering adjusting method, which comprise a mounting base, a turntable table top, a clamping assembly and a piston assembly; the turntable table top is erected on the mounting base and is rotationally connected with the mounting base, a cavity is formed in the center of the turntable table top, the piston assembly is fixed in the cavity, a piston rod of the piston assembly penetrates through the cavity and is fixedly connected with the clamping assembly, and the piston rod can move up and down in a feeding mode; the workpiece centering device further comprises a guide assembly, wherein the guide assembly concentrically limits a plurality of axial points or axial sections on the piston rod along the circumferential direction of the piston rod so as to enable the piston rod to move along a straight line. The invention can ensure that any part of the piston rod in the axial direction can not generate radial deviation, thereby ensuring that the blade positioned at the tail end of the piston rod is positioned accurately and improving the processing precision.
Description
Technical Field
The invention relates to the technical field of peripheral grinding machine design, in particular to a workpiece centering device, a peripheral grinding machine and a workpiece positioning and centering adjustment method.
Background
The indexable blade grinding machine is a machine tool designed for the industries and fields of aerospace, automobile manufacturing, engineering machinery, railway locomotives and the like, can grind the periphery of blades of different materials, different specifications and different shapes, and can keep the precision of the blades.
The blade is usually pushed to the processing station through the mode of atmospheric pressure promotion in the piston subassembly, because the lathe size is great, the length dimension of piston rod is also great, consequently, the piston rod is liable to lead to the positioning accuracy of blade to reduce because of the tiny radial clearance in inside in the propelling movement process, often need increase guide element on the piston rod, but guide element among the prior art is simple bearing seal, and just arrange in the tip of piston rod, guide element and piston rod are nearly line contact form, can not guarantee the positioning accuracy of each point of piston rod axial direction, when piston rod length dimension is great, still can produce the condition of blade positioning inaccuracy, for this reason, need design work piece centering device and peripheral grinding machine that can accurate positioning is centered, guarantee the grinding accuracy of blade.
Disclosure of Invention
In order to solve the technical problem that in the prior art, the positioning accuracy of a blade is reduced due to unstable radial position in the pushing process of a piston rod of a peripheral grinding machine, the invention provides a workpiece centering device, the peripheral grinding machine and a workpiece positioning centering adjusting method for solving the problems.
The invention provides a workpiece centering device, which comprises a mounting base, a turntable table top, a clamping assembly and a piston assembly, wherein the turntable table top is arranged on the mounting base; the turntable table top is erected on the mounting base and is rotationally connected with the mounting base, a cavity is formed in the center of the turntable table top, the piston assembly is fixed in the cavity, a piston rod of the piston assembly penetrates through the cavity and is fixedly connected with the clamping assembly, and the piston rod can move up and down in a feeding mode; the workpiece centering device further comprises a guide assembly, wherein the guide assembly concentrically limits a plurality of axial points or axial sections on the piston rod along the circumferential direction of the piston rod so as to enable the piston rod to move along a straight line.
The plurality of axial points or axial sections are used for guiding the contact surface of the guide component and the piston rod to be changed from single line contact in the prior art to a plurality of line contacts or columnar surface contacts which are arranged at intervals, and meanwhile, the guide component has identity and integrity to the central limit of the piston rod, but not mutually independent central limits, so that the radial offset of the piston rod in telescopic movement can be ensured to be zero.
Further, the guide assembly comprises at least two first guide structures which are positioned in the cavity and sleeved on the periphery of the piston rod, each first guide structure comprises a guide unit mounting seat and a guide sleeve bearing sleeved between the guide unit mounting seat and the piston rod, and the guide sleeve bearings concentrically limit the axial section on the piston rod; the guide unit mounting seat is fixedly connected with the cylinder body of the piston assembly.
Further, the guide sleeve bearing comprises a bearing body and balls, wherein a plurality of rows of raceway grooves which are mutually separated are arranged on the inner circumferential surface of the bearing body along the circumferential direction, a plurality of balls are arranged in each row of raceway grooves, and the balls are in rolling contact with the piston rod.
Further, the guide assembly further comprises two second guide structures fixed above the table top of the turntable, each second guide structure comprises a mounting base and a handle guide bearing, and the handle guide bearings of the two second guide structures are oppositely arranged on two circumferential sides of the piston rod along the Y axis and are in rolling contact with the piston rod.
Further, a milling flat surface in contact fit with the guide bearing with the handle is arranged on the piston rod, and the length of the milling flat surface is longer than the feeding stroke of the piston rod.
Further, the clamping assembly comprises a positioning seat connected with the piston rod and a V-shaped block fixed with the positioning seat, and the top of the V-shaped block is provided with a V-shaped opening suitable for clamping a workpiece; the V-shaped block is further provided with a waist-shaped hole, the waist-shaped hole extends along the up-down direction, and a screw penetrates through the waist-shaped hole to enable the V-shaped block to be fixedly connected with the positioning seat.
Further, a fine adjustment unit is further connected between the positioning seat and the piston rod, the fine adjustment unit comprises a fine adjustment installation seat and a wedge-shaped positioning block, a dovetail groove is formed in the bottom of the positioning seat and extends in a penetrating mode along the X axis, a single-side dovetail boss is arranged at the top of the fine adjustment installation seat, and the single-side dovetail boss and the wedge-shaped positioning block are arranged side by side and are clamped in the dovetail groove together.
Further, the workpiece centering device further comprises a stroke measuring unit, wherein the stroke measuring unit comprises a signaling rod fixedly connected with the bottom of the piston rod, and a first photoelectric switch and a second photoelectric switch fixedly connected with the mounting base; a first signaling boss and a second signaling boss positioned below the first signaling boss are arranged on the signaling rod, and when the first signaling boss triggers the first photoelectric switch, the piston rod reaches a lower limit position; when the second transmitting boss triggers the second photoelectric switch, the piston rod reaches an upper limit position.
The invention also provides a peripheral grinding machine, which comprises the workpiece centering device and a workpiece clamping unit fixed on the table top of the turntable, wherein the workpiece clamping unit is provided with a positioning end clamping center and a clamping end clamping center, a machining station is arranged between the positioning end clamping center and the clamping end clamping center, and the workpiece centering device is suitable for conveying the workpiece to the machining station.
The invention also provides a method for adjusting the positioning and centering of the workpiece, which uses the peripheral grinding machine and comprises the following steps:
S1: the workpiece is pushed to the processing station along the axial direction of the piston rod by the piston assembly.
S2: the table top of the turntable is horizontally rotated, and the angle of the workpiece is adjusted.
S3: the clamping end clamping center clamps the workpiece, and the workpiece clamping is completed.
The beneficial effects of the invention are as follows:
(1) According to the workpiece centering device, the workpiece is placed on the clamping assembly, the piston rod is limited through the guide assembly, and the guide assembly acts on a plurality of axial points or axial sections on the piston rod, so that the limit of the guide assembly on the piston rod extends along the axial direction, any part of the piston rod in the axial direction is ensured not to generate radial deviation, and therefore the blade positioned at the tail end of the piston rod is accurately positioned, and the machining precision is improved.
(2) According to the workpiece centering device, the guide assembly comprises at least two first guide structures arranged in the cavity, and the first guide structures act in a segmented mode along the axial direction of the piston rod and are used for compensating the radial gap of the piston rod in the cavity.
(3) According to the workpiece centering device, the first guide structure is in rolling contact with the piston rod through the strip-shaped rollaway nest grooves and the plurality of balls positioned in the rollaway nest grooves, the first guide structure is in columnar surface contact with the piston rod, a certain shaft section on the piston rod is limited, bending of the piston rod can be effectively avoided, adjacent rollaway nest grooves are separated from each other, each roller can roll in the respective rollaway nest groove in a circulating mode, and movement noise of the structure is reduced.
(4) The guide assembly of the invention also comprises a second guide structure which is positioned above the table top of the turntable, and the end part of the piston rod, which is close to the installation part of the blade, is used for further limiting the piston rod.
(5) The invention is also provided with a fine adjustment unit, the fine adjustment unit carries out fine adjustment on the position of the workpiece on the X axis, and the fine adjustment unit is matched with the second guide structure together, so that the horizontal positioning of the workpiece is more accurate.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a perspective view of a workpiece centering device according to the present invention;
FIG. 2 is a top view of a workpiece centering device according to the present invention;
FIG. 3 is a B-B cross-sectional view of FIG. 2;
FIG. 4 is an enlarged view at f of FIG. 3;
FIG. 5 is a top view of the piston assembly of the present invention;
FIG. 6 is a D-D sectional view of FIG. 5;
FIG. 7 is a sectional view in the E-E direction of FIG. 5;
FIG. 8 is an enlarged view at g of FIG. 6;
FIG. 9 is a cross-sectional view in the F-F direction of FIG. 6;
FIG. 10 is a top view of the peripheral grinding machine of the present invention;
FIG. 11 is a front view of the peripheral grinding machine of the present invention;
FIG. 12 is an enlarged view of FIG. 10 at a;
FIG. 13 is an enlarged view of FIG. 11 at b;
FIG. 14 is a cross-sectional view taken along A-A of FIG. 10;
FIG. 15 is an enlarged view of FIG. 14 at c;
FIG. 16 is an enlarged view of FIG. 14 at d;
fig. 17 is an enlarged view at e in fig. 14.
In the figure, 1, a mounting base, 2, a turntable table top, 3, a clamping assembly, 301, a positioning seat, 3011, a dovetail groove, 3012, a threaded hole, 302, a V-shaped block, 303, a waist-shaped hole, 304, a fine adjustment mounting seat, 3041, a single-sided dovetail boss, 305, a wedge-shaped positioning block, 306, a transition connecting seat, 307, a positioning pin assembly, 308, a third screw, 309, a positioning flat key, 310, a fourth screw, 4, a piston assembly, 401, a piston rod, 4011, a milling flat surface, 402, a cylinder body, 403, an upper cavity, 404, an upper cavity air inlet channel, 405, an upper cavity air inlet pipe joint, 406, a lower cavity, 407, a lower cavity air inlet channel, 408, a lower cavity air inlet pipe joint, 5, a cavity, 6, a workpiece, 7, a first screw, 8, a second screw, 9, a first guide structure, 901, a guide unit mounting seat, 902, a guide sleeve bearing, 9021, a bearing body, 9022, a ball, 9023, raceway grooves, 903, O-rings, 904, sliding rings, 905, circlips for holes, 10, second guide structures, 1001, guide bases, 10011, kidney-shaped mounting holes, 1002, guide bearings with handles, 11, rotors, 12, stators, 13, turntable main support bearings, 14, auxiliary support bearings, 15, angle encoders, 16, stroke measuring units, 1601, signaling rods, 16011, first signaling bosses, 16012, second signaling bosses, 1602, first photoelectric switches, 1603, second photoelectric switches, 1604, photoelectric switch mounting brackets, 17, workpiece clamping units, 1701, positioning end clamping centers, 1702, clamping end clamping centers, 1703, positioning push rods, 18, position online detection units, 1801, detection sensors, 1802, mounting brackets, 1803, limit lock nuts, 1804, and guide support brackets.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, the Z axis refers to a direction parallel to the expansion and contraction direction of the piston rod 401 in the piston assembly 4 for centering the workpiece 6, wherein the movement direction of the piston rod 401 when extended is a Z axis forward direction, the Y axis refers to a direction parallel to the expansion and contraction directions of the positioning end clamping tip 1701 and the clamping end clamping tip 1702 in the workpiece clamping unit 17, wherein the direction in which the clamping end clamping tip 1702 approaches the positioning end clamping tip 1701 is a Y axis forward direction, and the X axis refers to a direction perpendicular to both the Y axis and the Z axis.
In addition, the workpiece 6 in the present invention refers to a blade to be ground.
Embodiment one:
The workpiece centering device comprises a mounting base 1, a turntable table top 2, a clamping assembly 3 and a piston assembly 4, as shown in fig. 1 and 2; the turntable table top 2 is arranged on the mounting base 1 and is rotationally connected with the mounting base 1, a cavity 5 is arranged in the center of the turntable table top 2, the piston assembly 4 is fixed in the cavity 5, a piston rod 401 of the piston assembly 4 penetrates through the cavity 5 and is fixedly connected with the clamping assembly 3, and the piston rod 401 can move up and down in a feeding manner; the workpiece centering device further includes a guide assembly that concentrically positions a plurality of axial points or axial segments on the piston rod 401 in the circumferential direction of the piston rod 401 to move the piston rod 401 in a straight line.
The installation base 1 is a fixed structure, the turntable table top 2 is a rotating part, the turntable table top 2 rotates in the horizontal surface, when the turntable table top 2 rotates, the clamping assembly 3 and the piston assembly 4 synchronously rotate, the clamping assembly 3 is connected with the piston rod 401, and when the piston rod 401 moves up and down, the clamping assembly 3 synchronously moves up and down, namely, the clamping assembly 3 can move up and down and horizontally rotate.
The movement of the workpiece 6 along the Z axis is realized by the piston assembly 4, and the specific structure and working principle of the piston assembly 4 are as follows: as shown in fig. 5-7, a through inner hole in the center of the turntable table top 2 is a cavity 5, the piston assembly 4 is composed of a cylinder 402 and a piston rod 401, the outer circle of the cylinder 402 is positioned in the through inner hole and fixedly connected with the through screw 7, and the outer circle of the piston rod 401 is positioned in the inner hole of the cylinder 402 and can slide up and down for feeding. The center of the cylinder body 402 is a working cavity, two ends of the cylinder body 402 are provided with an upper cavity air inlet channel 404 and a lower cavity air inlet channel 407 which are suitable for introducing compressed gas, a shoulder in the middle of the piston rod 401 divides the working cavity into an upper cavity 403 and a lower cavity 406 which are not communicated with each other in the cylinder body 402, the upper cavity air inlet channel 404 is communicated with the lower cavity 406, the lower cavity air inlet channel 407 is communicated with the lower cavity 406, and the upper cavity air inlet channel 404 is connected with an upper cavity air inlet pipe joint 405 and a lower cavity air inlet pipe joint 408 at the upper end of the cylinder body 402.
As shown in fig. 4, 6 and 7, when the lower chamber air inlet pipe joint 408 is introduced with high-pressure air, the high-pressure air enters the lower chamber 406 through the lower chamber air inlet passage 407, the high-pressure air pushes the piston rod 401 to feed upward, the piston rod 401 drives the clamping assembly 3 fixedly connected with the piston rod 401 to feed upward together, and then the workpiece 6 positioned on the clamping assembly 3 is fed upward until reaching a processing station.
As shown in fig. 4, 6 and 7, when the upper chamber air inlet pipe joint 405 is filled with high-pressure air, the high-pressure air enters the upper chamber 403 through the upper chamber air inlet channel 404, the piston rod 401 is pushed by the high-pressure air to feed downwards, the clamping assembly 3 fixedly connected with the piston rod 401 is driven by the piston rod 401 to feed downwards together, and then the workpiece 6 positioned on the clamping assembly 3 is fed downwards until the workpiece is separated from the processing station.
In this embodiment, the turntable table top 2 and the mounting base 1 cooperate to form a workpiece angle positioning assembly, the workpiece angle positioning assembly is actually a numerical control turntable directly driven by a torque motor, as shown in fig. 14 and 16, the turntable table top 2 is driven by a rotor 11 and a stator 12 of the torque motor, the turntable table top 2 is supported on the mounting base 1 through a main support bearing 13 and an auxiliary support bearing 14 of the turntable, the angle position of the turntable table top 2 is measured and fed back on line through an angle encoder 15, and a cooling sleeve of the torque motor is used for cooling the torque motor and controlling the temperature rise of the torque motor. The turntable table top 2 is directly driven by a torque motor, belongs to zero-clearance transmission driving, and adopts a high-precision angle encoder 15 to measure and feed back the angle of the turntable table top 2, so that the angle positioning precision of the turntable table top 2 is very high.
The guide assembly comprises at least two first guide structures 9 which are positioned in the cavity 5 and sleeved on the periphery of the piston rod 401, each first guide structure 9 comprises a guide unit mounting seat 901 and a guide sleeve bearing 902 sleeved between the guide unit mounting seat 901 and the piston rod 401, and the guide sleeve bearings 902 concentrically limit the axial section on the piston rod 401; the guide unit mount 901 is fixedly connected with the cylinder 402 of the piston assembly 4. The concentric limit of the axial section refers to that the contact surface of the guide sleeve bearing 902 and the piston rod 401 is an annular columnar contact surface, so that the continuous limit of the axial section on the piston rod 401 is realized, and the center of the guide sleeve bearing 902 extends along the axial direction of the piston rod 401 through the integral design of the guide sleeve bearing 902, so that the concentric limit is realized.
The guide sleeve bearing 902 may, but is not limited to, be configured as follows: the guide sleeve bearing 902 includes a bearing body 9021 and balls 9022, wherein a plurality of rows of raceway grooves 9023 spaced apart from each other are arranged in the circumferential direction on the inner circumferential surface of the bearing body 9021, a plurality of balls 9022 are arranged in each row of raceway grooves 9023, and the balls 9022 are in rolling contact with the piston rod 401.
In the present embodiment, as shown in fig. 3 to 8, the first guide structure 9 is provided with two guide bearings 902 fixed to the upper and lower ends of the cylinder 402, respectively, and the guide bearings 902 are fixed to the inner holes of the guide unit mounting seat 901, and the guide bearings 902 include a plurality of rows of balls 9022 (typically 4 or 6 rows, in the present embodiment, 4 rows) that are circularly rolling and are uniformly distributed in the circumferential direction, and each row of balls 9022 has its own independent raceway groove 9023 and is isolated from the other rows of balls 9022, so that the balls do not affect each other. When the piston rod 401 is fed up and down, the inner hole of the bearing body 9021 is not in direct contact with the outer circle of the piston rod 401, and only the ball 9022 is in rolling contact with the outer circle of the piston rod 401, so that the piston rod 401 can be accurately guided during up and down feeding, the friction resistance of the piston rod 401 in up and down feeding can be reduced, the guiding work is accurate and smooth, and meanwhile, the service lives of the first guiding structure 9 and the piston assembly 4 can be prolonged. The first guiding structures 9 are respectively arranged on the upper side and the lower side of the cylinder body 402, so that the spans of the two first guiding structures 9 are enlarged, and the guiding effect and the guiding precision are improved. In each guide sleeve bearing 902, a plurality of rows of balls 9022 are uniformly distributed, so that the first guiding structure 9 has a self-centering function during guiding, and the axis of the first guiding structure 9 is always concentric with the central axis of the piston rod 401, thereby improving the guiding precision.
The structure of the first guide structure 9 at the upper end of the cylinder 402 will be described in detail by taking the following example: as shown in fig. 8 and 9, the guide unit mounting seat 901 is fixedly connected with the cylinder 402 through the second screw 8, the bearing body 9021 is fixedly connected with the guide unit mounting seat 901, the raceway grooves 9023 are located on the inner periphery of the bearing body 9021, the raceway grooves 9023 are open towards one end of the piston rod 401, the balls 9022 are located in the raceway grooves 9023, the balls 9022 contact the piston rod 401 through the open ends of the raceway grooves 9023, each row of balls 9022 are provided with independent raceway grooves 9023, and the balls 9022 in the other raceway grooves 9023 are not affected by each other, so that each row of balls 9022 can circulate in the respective raceway grooves 9023, the consistency of a central shaft is ensured, and in addition, as the raceway grooves 9023 are in a columnar structure, the balls 9022 are distributed in each raceway groove 9023, and therefore the guide sleeve bearing 902 contacts the piston rod 401 through a plurality of rows of balls 9022, and the center limiting of a certain shaft section on the piston rod 401 is realized. The guide sleeve bearing 902 is sealed in the guide unit installation seat 901, the lower end of the guide unit installation seat 901 is inserted into an inner hole from the upper side of the cylinder body 402 and sealed at the upper end of the working cavity, the outer circumferential surface of the guide unit installation seat 901 is sealed with the inner circumferential surface of the cylinder body 402 through the O-shaped sealing ring 903, the inner circumferential surface of the guide unit installation seat 901 is sealed with the outer circumferential surface of the piston rod 401 through the sliding sealing ring 904, and the upper end of the guide unit installation seat 901 is axially propped against the top of the bearing body 9021 through the elastic retainer ring 905 for the hole.
The first guide structure 9 in the present embodiment can avoid deviation of the piston rod 401 in the X-axis direction and the Y-axis direction of the machine tool at the time of up-down feeding positioning.
Embodiment two:
on the basis of the first embodiment, the guiding assembly further comprises two second guiding structures 10 fixed above the table top 2 of the turntable, each second guiding structure 10 comprises a guiding base 1001 and a guiding bearing 1002 with a handle, and the guiding bearings 1002 with handles of the two second guiding structures 10 are oppositely arranged on the circumferential side surface of the piston rod 401 along the Y axis and are in rolling contact with the piston rod 401. The Y-axis direction is parallel to the expansion and contraction direction of the clamping end clamping center 1702, and since the center of the end face of the positioning end clamping center 1701 is the mechanical zero point of the machine tool, the second guiding structure 10 can be used to attach the workpiece 6 to the end face of the positioning end clamping center 1701, so that the workpiece 6 can be accurately positioned to the mechanical zero point.
As shown in fig. 1 and 4, two second guiding structures 10 are respectively located at two sides of the piston rod 401, the second guiding structures 10 are in rolling contact with the piston rod 401 through guiding bearings 1002 with handles, two guiding bases 1001 are respectively located at two sides of the piston rod 401 along the X-axis direction, one guiding bearing 1002 with a handle is installed at one side of each guiding base 1001, two guiding bearings 1002 with handles are respectively located at two sides of the piston rod 401 along the Y-axis direction, in order to improve guiding effect, preferably, a flat milling surface 4011 in contact fit with the guiding bearings 1002 with handles is arranged on the piston rod 401, and the length of the flat milling surface 4011 is longer than the feeding stroke of the piston rod 401. Two milling flat surfaces 4011 are designed on two sides of the outer circle of the upper end of the piston rod 401, the length requirements of the two milling flat surfaces 4011 are slightly larger than the up-and-down feeding stroke of the piston rod 401, and the handle guide bearing 1002 is ensured to be in rolling contact with the milling flat surfaces 4011 all the time. Compared with the first guide structure 9, the second guide structure 10 is an auxiliary guide unit, and the second guide structure 10 and the first guide structure 9 cooperate to further improve the guide precision and avoid the deviation of the whole guide unit in the X-axis direction and the Y-axis direction of the machine tool during feeding and positioning in the up-down direction.
As shown in fig. 1 and fig. 4, the two second guiding structures 10 have another function, when the piston rod 401 is fed up and down under the action of hydraulic pressure, the two second guiding structures 10 which are symmetrically arranged are matched with the milling flat surfaces 4011 which are symmetrically arranged on the piston rod 401, so that the axial rolling guiding can be realized, and meanwhile, the anti-indexing function of the piston rod 401 can be realized, so that the piston rod 401 is prevented from rotating in the circumferential direction during axial feeding to influence the positioning and clamping of the workpiece 6, and the guiding precision and guiding effect are improved.
Embodiment III:
On the basis of the first embodiment or the second embodiment, the clamping assembly 3 may, but is not limited to, have the following structure: the device comprises a positioning seat 301 connected with a piston rod 401 and a V-shaped block 302 fixed with the positioning seat 301, wherein the top of the V-shaped block 302 is provided with a V-shaped opening suitable for clamping a workpiece 6; the V-shaped block 302 is further provided with a waist-shaped hole 303, the waist-shaped hole 303 extends in the up-down direction, and a screw penetrates through the waist-shaped hole 303 to fixedly connect the V-shaped block 302 with the positioning seat 301. The waist-shaped holes 303 formed in the V-shaped blocks 302 are used for slightly adjusting the vertical positions of the V-shaped positioning blocks. For the position of the workpiece 6 in the angle direction, the precision can be ensured by only driving the workpiece 6 by the turntable table top 2 to be attached to the end face of the V-shaped block 302, which faces the positioning end clamping center 1701, and for the X-axis direction and the Z-axis direction, since different workpieces 6 have small size deviations, the workpieces are required to be precisely positioned to a mechanical zero point by further fine adjustment.
During adjustment, the workpiece 6 is initially positioned in the up-down direction through the first guide structure 9, the workpiece 6 is pushed to a preset position, then the difference between the workpiece 6 in the up-down direction and the mechanical zero point of the machine tool (the mechanical zero point refers to the center of the end face of the positioning end clamping center 1701) is measured, and the V-shaped block 302 is finely adjusted according to the difference to enable the workpiece 6 to be fed to the correct zero point position, so that the up-down position of the workpiece 6 is adjusted to be in place. The V-shaped block 302 only needs to be adjusted when the workpiece 6 is positioned in the up-down direction for the first time after being replaced, the V-shaped block 302 does not need to be adjusted after the first time adjustment, and then when the workpiece is ground again, the positioning in the up-down direction can be automatically fed up and down through the piston assembly 4, and manual participation is not needed.
For fine adjustment of the X-axis direction, the fine adjustment is realized by the following structure: a fine adjustment unit is further connected between the positioning seat 301 and the piston rod 401, the fine adjustment unit comprises a fine adjustment mounting seat 304 and a wedge-shaped positioning block 305, a dovetail groove 3011 is formed in the bottom of the positioning seat 301, the dovetail groove 3011 penetrates and extends along the X axis, a single-side dovetail boss 3041 is arranged at the top of the fine adjustment mounting seat 304, and the single-side dovetail boss 3041 and the wedge-shaped positioning block 305 are arranged side by side and clamped in the dovetail groove 3011 together. The dovetail groove 3011 at the bottom of the positioning seat 301 improves the adjusting track for the fine adjustment installation seat 304, and meanwhile, two sides of the dovetail groove 3011 are inclined surfaces, so that pressure can be applied to the fine adjustment installation seat 304, and the function of pressing the fine adjustment installation seat 304 is achieved. The single-sided dovetail boss 3041 is that one side of the single-sided dovetail boss 3041 is an inclined plane, and is attached to one side of the dovetail groove 3011, and the other side of the single-sided dovetail boss 3041 is not attached to the other side of the dovetail groove 3011.
As shown in fig. 4 and 17, the fine adjustment mount 304 is connected to the piston rod 401 as follows: the bottom of the fine adjustment installation seat 304 is provided with a transition connection seat 306, the fine adjustment installation seat 304 is positioned with the end face of the transition connection seat 306 through a positioning pin assembly 307, and is fixedly connected to the transition connection seat 306 through a third screw 308. The lower part of the transition connecting seat 306 is sleeved on the outer periphery of the piston rod 401, is positioned with the outer periphery of the piston rod 401 through a positioning flat key 309, and is then fixed on the upper end surface of the piston rod 401 through a fourth screw 310. The positioning seat 301 is positioned on a unilateral dovetail boss 3041 arranged at the top of the fine adjustment installation seat 304 through a dovetail groove 3011 and a wedge-shaped positioning block 305 which are formed in a penetrating manner at the bottom, two penetrating threaded holes 3012 are formed in the top of the positioning seat 301, and the wedge-shaped positioning block 305 is propped downwards by two locking screws through the two threaded holes 3012, so that the wedge-shaped positioning block 305 is attached and clamped on a guide rail surface of the dovetail groove 3011, and positioning and locking of the positioning seat 301 are realized. The top surface of the single-side dovetail boss 3041 is provided with a uniformly-carved graduated scale, the position of the positioning seat 301 along the X-axis direction can be accurately read through the graduated scale, the difference between the mechanical zero point of the workpiece 6 and the machine tool in the X-axis direction is measured firstly, the positioning seat 301 is adjusted to the correct position according to the difference, and then the locking screw is locked. The trimming unit is also used when the position of the V-block 302 is first adjusted, and then the trimming unit is adjusted without manual operation when grinding again.
Embodiment four:
On the basis of the first embodiment, the second embodiment or the third embodiment, the workpiece centering device further comprises a stroke measurement unit 16, wherein the stroke measurement unit 16 comprises a signaling rod 1601 fixedly connected with the bottom of the piston rod 401, and a first photoelectric switch 1602 and a second photoelectric switch 1603 fixedly connected with the mounting base 1; the signaling rod 1601 is provided with a first signaling boss 16011 and a second signaling boss 16012 located below the first signaling boss 16011, and when the first signaling boss 16011 triggers the first photoelectric switch 1602, the piston rod 401 reaches a lower limit position; when the second signaling boss 16012 triggers the second opto-electronic switch 1603, the piston rod 401 reaches an upper limit position.
As shown in fig. 3, the lower end surface of the piston rod 401 is provided with a screw hole, and the stroke measuring unit 16 is positionally connected to the lower end surface of the piston rod 401 by an external screw thread at the tip end of the signaling rod 1601. The middle part of the signaling pole 1601 is provided with a first signaling boss 16011, the lower part is provided with a second signaling boss 16012, a first photoelectric switch 1602 and a second photoelectric switch 1603 are arranged on a photoelectric switch mounting bracket 1604 fixedly connected with the mounting base 1, and the first photoelectric switch 1602 is positioned above the second photoelectric switch 1603. When the piston rod 401 is fed downwards to the limit position, the upper first sending boss 16011 triggers the upper first photoelectric switch 1602, and the first photoelectric switch 1602 sends a signal to the numerical control system, indicating that the piston rod 401 reaches the lower limit position, and the workpiece 6 is retracted downwards to the preset position; when the piston rod 401 is fed up to the limit position, the second signalling boss 16012 located below triggers the second photoelectric switch 1603 located below, and the second photoelectric switch 1603 signals to the numerical control system that the piston rod 401 has reached the upper limit position, at which time the workpiece 6 is fed up to the predetermined position.
Fifth embodiment:
A peripheral grinding machine comprising the above-mentioned workpiece centering device and a workpiece clamping unit 17 fixed on a turntable table top 2, the workpiece clamping unit 17 having a positioning end clamping tip 1701 and a clamping end clamping tip 1702, a machining station being between the positioning end clamping tip 1701 and the clamping end clamping tip 1702, the workpiece centering device being adapted to transport a workpiece 6 to the machining station.
As shown in fig. 10-14, the workpiece clamping unit 17 clamps the workpiece 6 along the X-axis direction, the workpiece clamping unit 17 adopted by the invention is the prior art, no detailed drawing is provided here, only brief description is made, the workpiece clamping unit 17 is composed of a positioning component positioned on the right side and a clamping component positioned on the left side, the positioning component comprises a positioning ejector rod and a positioning ejector rod 1703, the positioning ejector rod is a fixed component, the front end of the positioning ejector rod 1703 penetrates through the positioning ejector rod, the positioning ejector rod 1703 is used for positioning the workpiece 6 with a hole, and is pneumatically controlled, when positioning is needed, the pneumatic reversing valve acts, the positioning ejector rod 1703 stretches out of the inner hole of the positioning ejector rod under the action of air pressure, when positioning is not needed, the pneumatic reversing valve acts reversely, and the positioning ejector rod 1703 is retracted into the inner hole of the positioning ejector rod under the action of a return spring force. The clamping assembly comprises a clamping ejector rod, a lever and a hydraulic cylinder, wherein the clamping ejector rod and the hydraulic cylinder are respectively hinged at two ends of the lever, the telescopic motion of the hydraulic cylinder is converted into the reciprocating motion of the clamping ejector rod by utilizing the principle of a force-increasing lever, the positioning end clamping center 1701 is the end part of the positioning ejector rod, the clamping end center is the end part of the clamping ejector rod, the positioning end clamping center 1701 is fixed, and the clamping end clamping center 1702 moves along the Y axis through hydraulic control.
When the workpiece 6 has a center hole, the workpiece centering device completes coarse positioning of the workpiece 6 (including angular positioning and positioning in three coordinate axis directions), the positioning plunger 1703 extends into the positioning hole of the workpiece 6 along the inner hole of the positioning plunger under pneumatic control to complete accurate positioning, and then the clamping end clamping center 1702 clamps the workpiece 6 under hydraulic action. After the workpiece 6 is clamped, the piston rod 401 is retracted to the lower limit position for standby under pneumatic control.
When the workpiece 6 has no central hole, after the workpiece centering device finishes positioning the workpiece 6, the positioning push rod is retracted into the positioning hole along the inner hole of the positioning push rod to wait under pneumatic control, and then the clamping end clamping center 1702 clamps the workpiece 6 under the hydraulic action. After the workpiece 6 is clamped, the piston rod 401 is retracted to the lower limit position for standby under pneumatic control.
In order to improve the positioning precision, in a further design of this embodiment, the peripheral grinding machine is further provided with a position on-line detection unit 18, the position on-line detection unit 18 includes a position detection sensor 1801 and a mounting bracket 1802, as shown in fig. 15, the position detection sensor 1801 is screwed in a hole of the mounting bracket 1802, and then locked on the outer side of the mounting bracket 1802 through a limit lock nut 1803, the front end of the position detection sensor 1801 is guided to stretch out and draw back through a guiding support 1804, the measuring head of the position detection sensor 1801 is pneumatically controlled, when the pressure air is introduced into the position detection sensor 1801, the measuring head of the position detection sensor 1801 extends forward to a measuring position along the guiding support 1804, and when the gas pressure cavity in the position detection sensor 1801 is unloaded, the measuring head of the position detection sensor returns to a waiting position along the guiding support 1804 under the action of a spring force.
The position online detection unit 18 can online detect the following positions of the workpiece 6:
1) The position of the workpiece 6 in the machine tool left-right direction (Y-axis direction) and the difference from the position of the zero point in the machine tool left-right direction of the workpiece 6.
2) The position of the workpiece 6 in the machine tool front-rear direction (X-axis direction) and the difference from the position of the zero point in the machine tool front-rear direction of the workpiece 6.
3) The position of the workpiece 6 in the up-down direction (Z-axis direction) and the position of the zero point in the up-down direction of the workpiece 6 of the machine tool.
4) The position of the angular position of the workpiece 6 (angular position in the horizontal plane) and the position of the zero point in the angular direction of the machine tool.
Example six:
the method for adjusting the positioning and centering of the workpiece, which uses the peripheral grinding machine comprises the following steps:
S1: the workpiece 6 is pushed to the processing station in the axial direction of the piston rod 401 by the piston assembly 4.
S2: the turntable tabletop 2 is horizontally rotated to adjust the angle of the workpiece 6.
S3: the clamping end clamping center 1702 clamps the workpiece 6, and the workpiece 6 is clamped.
The specific operation steps of S1 are as follows:
The lower cavity 406 of the piston assembly 4 is filled with pressurized air, and the piston rod 401 is fed upwards to drive the workpiece 6 positioned in the V-shaped block 302 to a rough positioning station of the workpiece 6.
The specific operation steps of S2 are as follows:
the position on-line detection unit 18 detects the position of the angle position of the workpiece 6 (the angle position of the machine tool in the horizontal plane), compares the position with the zero point of the angle position, obtains the angle deviation of the workpiece 6 in the numerical control system, sends an angle adjustment instruction of the workpiece 6 to the workpiece angle positioning component according to the angle deviation of the workpiece 6, and the workpiece angle positioning component adjusts the angle of the workpiece 6 to the correct position according to the instruction, and finishes the adjustment of the workpiece angle positioning component.
When the workpiece 6 is first clamped and adjusted, the following fine adjustment steps are needed after the above two steps:
first, the position on-line detecting unit 18 detects the position of the workpiece 6 in the up-down direction, compares the position with the zero point in the up-down direction of the machine tool, obtains the position deviation in the up-down direction of the workpiece 6 in the numerical control system, displays the deviation value on a display, and then loosens the screw on the V-shaped block 302, and adjusts the V-shaped block 302 up and down so that the blade coincides with the zero point in the up-down direction of the machine tool.
Then, the position in-line detecting unit 18 detects the position of the insert in the front-rear direction (X-axis direction of the machine tool) and compares it with the X-axis zero point, obtains the positional deviation in the X-axis direction of the workpiece 6 in the numerical control system, displays the deviation value on the display, and then releases the locking screw at the top of the positioning seat 301, and manually adjusts the position of the workpiece 6 in the front-rear direction to the correct position based on the deviation value.
The specific operation process of S3 is as follows:
Firstly, checking whether the workpiece 6 is provided with a central hole, if the workpiece 6 is not provided with the central hole, the positioning push rod 1703 of the workpiece clamping unit 17 is retracted to a waiting position under pneumatic control, then the clamping end clamping center 1702 clamps the workpiece 6 under hydraulic pressure, and after the workpiece 6 is clamped, the piston rod 401 is retracted to a lower limit position for standby under pneumatic control; if the workpiece 6 is provided with a center hole, the positioning push rod 1703 of the workpiece clamping unit 17 extends into the positioning hole of the workpiece 6 along the inner hole of the positioning push rod under pneumatic control to finish accurate positioning, then the clamping end clamping center 1702 clamps the workpiece 6 under hydraulic pressure, and after the workpiece 6 is clamped, the piston rod 401 returns to the lower limit position for standby under pneumatic control.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. A workpiece centering device, characterized in that: the device comprises a mounting base (1), a turntable table top (2), a clamping assembly (3) and a piston assembly (4); the turntable table top (2) is erected on the mounting base (1) and is rotationally connected with the mounting base (1), a cavity (5) is formed in the center of the turntable table top (2), the piston assembly (4) is fixed in the cavity (5), a piston rod (401) of the piston assembly (4) penetrates through the cavity (5) and is fixedly connected with the clamping assembly (3), and the piston rod (401) can move in an up-down feeding mode;
The workpiece centering device further comprises a guide assembly, wherein the guide assembly concentrically limits a plurality of axial points or axial sections on the piston rod (401) along the circumferential direction of the piston rod (401) so as to enable the piston rod (401) to move along a straight line; the guide assembly comprises at least two first guide structures (9) which are positioned in the cavity (5) and sleeved on the periphery of the piston rod (401), each first guide structure (9) comprises a guide unit mounting seat (901) and a guide sleeve bearing (902) which is sleeved between the guide unit mounting seat (901) and the piston rod (401), and the guide sleeve bearings (902) concentrically limit the axial section on the piston rod (401); the guide unit mounting seat (901) is fixedly connected with the cylinder body (402) of the piston assembly (4); the guide sleeve bearing (902) comprises a bearing body (9021) and balls (9022), wherein a plurality of rows of mutually separated raceway grooves (9023) are arranged on the inner circumferential surface of the bearing body (9021) along the circumferential direction, a plurality of balls (9022) are arranged in each row of raceway grooves (9023), and the balls (9022) are in rolling contact with a piston rod (401); the guide assembly further comprises two second guide structures (10) fixed above the turntable table top (2), each second guide structure (10) comprises a guide base (1001) and a handle guide bearing (1002), and the handle guide bearings (1002) of the two second guide structures (10) are oppositely arranged on two circumferential sides of the piston rod (401) along the Y axis and are in rolling contact with the piston rod (401); the piston rod (401) is provided with a milling flat surface (4011) in contact fit with the guide bearing (1002) with a handle, and the length of the milling flat surface (4011) is larger than the feeding stroke of the piston rod (401).
2. The workpiece centering device of claim 1, wherein: the clamping assembly (3) comprises a positioning seat (301) connected with the piston rod (401) and a V-shaped block (302) fixed with the positioning seat (301), and a V-shaped opening suitable for clamping a workpiece (6) is formed in the top of the V-shaped block (302); the V-shaped block (302) is further provided with a waist-shaped hole (303), the waist-shaped hole (303) extends along the up-down direction, and a screw penetrates through the waist-shaped hole (303) to enable the V-shaped block (302) to be fixedly connected with the positioning seat (301).
3. The workpiece centering device of claim 2, wherein: the positioning seat (301) and the piston rod (401) are connected with a fine adjustment unit, the fine adjustment unit comprises a fine adjustment installation seat (304) and a wedge-shaped positioning block (305), a dovetail groove (3011) is formed in the bottom of the positioning seat (301), the dovetail groove (3011) penetrates through and extends along the X axis, a single-side dovetail boss (3041) is arranged at the top of the fine adjustment installation seat (304), and the single-side dovetail boss (3041) and the wedge-shaped positioning block (305) are arranged side by side and are clamped in the dovetail groove (3011) together.
4. The workpiece centering device of claim 1, wherein: the workpiece centering device further comprises a stroke measuring unit (16), wherein the stroke measuring unit (16) comprises a transmitting rod (1601) fixedly connected with the bottom of the piston rod (401), and a first photoelectric switch (1602) and a second photoelectric switch (1603) fixedly connected with the mounting base (1);
A first transmitting boss (16011) and a second transmitting boss (16012) located below the first transmitting boss (16011) are arranged on the transmitting rod (1601), and when the first transmitting boss (16011) triggers the first photoelectric switch (1602), the piston rod (401) reaches a lower limit position; when the second signaling boss (16012) triggers the second photoelectric switch (1603), the piston rod (401) reaches an upper limit position.
5. A peripheral grinding machine, characterized in that: comprising a workpiece centering device as claimed in any of claims 1-4, and a workpiece clamping unit (17) fixed to the turntable table top (2), the workpiece clamping unit (17) having a positioning end clamping tip (1701) and a clamping end clamping tip (1702), between which a machining station is located, the workpiece centering device being adapted to transport the workpiece (6) to the machining station.
6. An adjusting method for positioning and centering a workpiece is characterized by comprising the following steps of: the method using the peripheral grinding machine of claim 5, comprising the steps of:
s1: pushing the workpiece (6) to a processing station along the axial direction of the piston rod (401) by utilizing the piston assembly (4);
S2: rotating the turntable table top (2) horizontally to adjust the angle of the workpiece (6);
S3: the clamping end clamping center (1702) clamps the workpiece (6), and the workpiece (6) is clamped.
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| GB288762A (en) * | 1927-02-05 | 1928-04-19 | London Electric Railway Compan | Improvements in or relating to power-operated tool or work turrets |
| DE1477871A1 (en) * | 1960-07-27 | 1969-04-03 | Warsewa Dipl Ing Hans Robert | Delivery device |
| DE10322501A1 (en) * | 2003-05-19 | 2004-12-09 | Peter Schnabl | Rotary piston pump, has a piston whose annular space is positioned with respect to the shaft area of rollers such that the piston rotates continuously along the circumference of the rollers |
| DE102004036915A1 (en) * | 2004-07-29 | 2006-03-23 | Ludwig Ehrhardt Gmbh | Clamping cylinder in compact design |
| JP4474303B2 (en) * | 2005-03-04 | 2010-06-02 | 株式会社コガネイ | Work support device |
| CN103831463B (en) * | 2014-03-12 | 2016-02-03 | 无锡威孚马山油泵油嘴有限公司 | A kind of tool structure for plunger helix processing |
| CN107756097A (en) * | 2016-08-19 | 2018-03-06 | 叶光才 | A kind of machine tool clamping device and its rotary cylinder |
| CN205950345U (en) * | 2016-08-19 | 2017-02-15 | 叶光才 | Machine tool clamping device and rotary cylinder thereof |
| CN106425822A (en) * | 2016-08-31 | 2017-02-22 | 德清勤龙磨床制造有限公司 | Honing machine |
| US11034006B2 (en) * | 2019-01-25 | 2021-06-15 | Robert Bosch Tool Corporation | Pneumatic linear fastener driving tool |
| CN211305084U (en) * | 2019-11-29 | 2020-08-21 | 重庆衡杰科技有限公司 | Gear grinding clamp for shaft gear |
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