Shaft workpiece clamping device

Abstract

The utility model discloses a shaft type workpiece clamping device which comprises a machine frame, a clamping mechanism and a supporting mechanism, a through hole and a clamping groove are formed in the middle of the machine frame, the clamping mechanism comprises a clamping head movably arranged in the clamping groove, one end of the clamping head is in threaded connection with a threaded pipe, the threaded pipe penetrates through the through hole and extends out of the machine frame, and the supporting mechanism is connected with the clamping head. A connecting pipe is rotationally arranged on one side of the through hole, a first annular block is arranged at the end of the connecting pipe, a second annular block is arranged at the end of the threaded pipe, a plurality of bolts are arranged on one end face of the annular block in the circumferential direction, penetrate through the second annular block and are in threaded connection with the nut, and the outer wall of the connecting pipe is sleeved with an extrusion assembly matched with the first annular block; clamping assemblies are arranged on the two sides of the connecting pipe, the supporting mechanism comprises a supporting table, the top end of the supporting table is rotationally connected with the bottom ends of two clamping plates, the top ends of the two clamping plates are rotationally connected with telescopic rods of first air cylinders correspondingly, and the bottom ends of the two first air cylinders are rotationally connected with the supporting table; the clamping device can clamp and support the shaft workpieces and can prevent the shaft workpieces from rotating.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe machining technical field especially a kind of shaft workpiece clamping device. BACKGROUND

[0002] For the grinding of shaft parts, clamping mechanism is needed, but the clamping mechanism for machining shaft workpiece is single in function at present, and most of them can only clamp shaft parts, and when the machine processes shaft parts, it may generate torsion on shaft parts or make shaft parts vibrate irregularly, so that it rotates or shifts, which easily causes the loss of finished product precision, makes shaft parts useless, wastes raw materials and increases cost, and the production and processing efficiency is low, therefore, we propose a kind of shaft workpiece clamping device. SUMMARY

[0003] The utility model discloses a kind of shaft workpiece clamping devices to solve the problems raised in the above background.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: a kind of shaft workpiece clamping device, including rack, clamping mechanism and support mechanism, the middle part of the rack is provided with through hole, one end of the through hole is communicated with outside by clamping groove, the clamping mechanism includes chuck that is movably arranged in the clamping groove, the inner wall of the clamping groove is matched with chuck, one end of the chuck is connected with threaded tube by screw thread, the threaded tube extends to the outside of rack by passing through through hole, one side of the through hole is rotatably provided with connecting pipe, the connecting pipe is sleeved on the outside of threaded tube, the end of the connecting pipe is provided with annular block one, the end of the threaded tube is provided with annular block two, the end surface of the annular block one is circumferentially provided with multiple bolts, multiple bolts pass through annular block two and are connected with nut by screw thread, the outer wall of the connecting pipe is sleeved with extrusion assembly matched with annular block one, the both sides of the connecting pipe are provided with clamping assembly, the support mechanism includes support table that is arranged on the side wall of rack, the top of the support table is rotatably connected with the bottom of two clamping plates, two clamping plates are symmetrically arranged on the both sides of chuck, the top of the two clamping plates is rotatably connected with the telescopic rod of cylinder one respectively, the bottom of two cylinder one is rotatably connected with support table, the middle part of two clamping plates is provided with semicircular gap.

[0005] As a preferred scheme of the utility model discloses a kind of shaft workpiece clamping device, wherein: the extrusion assembly includes two support plates, two support plates are symmetrically arranged on the side wall of rack on the both sides of connecting pipe, the outer wall of the connecting pipe is sleeved with tensioning piece and extrusion piece.

[0006] As a preferred scheme of the shaft workpiece clamping device, the tensioning member comprises a ring block three, the ring block three is sleeved on the outer wall of the connecting pipe on one side of the ring block one, a plurality of installation grooves are formed in the outer wall of the ring block three in the circumferential direction, and the installation grooves are movably connected with tensioning claws through the insertion of the latches.

[0007] As a preferred scheme of the shaft workpiece clamping device, the tensioning member comprises a ring block three, the ring block three is sleeved on the outer wall of the connecting pipe on one side of the ring block one, a plurality of installation grooves are formed in the outer wall of the ring block three in the circumferential direction, and the installation grooves are movably connected with tensioning claws through the insertion of the latches.

[0008] As a preferred scheme of the shaft workpiece clamping device, the tensioning member comprises a ring block three, the ring block three is sleeved on the outer wall of the connecting pipe on one side of the ring block one, a plurality of installation grooves are formed in the outer wall of the ring block three in the circumferential direction, and the installation grooves are movably connected with tensioning claws through the insertion of the latches.

[0009] As a preferred scheme of the shaft workpiece clamping device, the tensioning member comprises a ring block three, the ring block three is sleeved on the outer wall of the connecting pipe on one side of the ring block one, a plurality of installation grooves are formed in the outer wall of the ring block three in the circumferential direction, and the installation grooves are movably connected with tensioning claws through the insertion of the latches.

[0010] The shaft workpiece clamping device has the beneficial effects that the shaft workpiece to be clamped is placed in the chuck, the telescopic rod of the second air cylinder is controlled to retract, the ring block four and the arc-shaped shell are driven to move towards the ring block three through the ear plate, the tensioning claws are in the clamped state between the bottom wall of the installation groove of the ring block three and the arc-shaped shell after the tensioning claws pass through the surface of the arc-shaped shell, the ring block three is driven to move towards the ring block one at the end of the connecting pipe by the tensioning claws, the ring block one is driven to move by the ring block three, the ring block two at the end of the threaded pipe is driven to move, the threaded pipe is clamped to clamp the shaft workpiece, the clamping assembly on the two sides of the connecting pipe can clamp the connecting pipe so that the connecting pipe cannot rotate, and the threaded pipe and the shaft workpiece also cannot rotate. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0012] Figure 1 It is a front structure schematic view of a shaft workpiece clamping device.

[0013] Figure 2 It is a structure schematic view of the cooperation between the rack and the clamping mechanism in a shaft workpiece clamping device.

[0014] Figure 3 It is a back structure schematic view of a shaft workpiece clamping device.

[0015] Figure 4 It is a structure schematic view of a clamping mechanism in a shaft workpiece clamping device. DETAILED DESCRIPTION

[0016] The utility model will be specifically introduced below in combination with the drawings and examples.

[0017] Referring to Figures 1-4 , this embodiment is a shaft workpiece clamping device, including frame 100, clamping mechanism 200 and support mechanism 300, the middle part of frame 100 is provided with through hole 101, one end of through hole 101 is communicated with the outside through clamping groove 102, clamping mechanism 200 includes chuck 201 movably arranged in clamping groove 102, the inner wall of clamping groove 102 is matched with chuck 201, one end of chuck 201 is screw-connected with threaded tube 202, threaded tube 202 extends to the outside of frame 100 through through hole 101, one side of through hole 101 is rotatably provided with connecting pipe 203, connecting pipe 203 is sleeved outside threaded tube 202, the end of connecting pipe 203 is provided with annular block one 203a, the end of threaded tube 202 is provided with annular block two 202a, the end surface of annular block one 203a is circumferentially provided with a plurality of bolts, a plurality of bolts pass through annular block two 202a and are screw-connected with nuts, the outer wall of connecting pipe 203 is sleeved with extrusion assembly 204 matched with annular block one 203a, clamping assembly 205 is arranged on both sides of connecting pipe 203, support mechanism 300 includes support table 301 arranged on the side wall of frame 100, the top end of support table 301 is rotatably connected with the bottom end of two clamping plates 302, two clamping plates 302 are symmetrically arranged on both sides of chuck 201, the top end of two clamping plates 302 is rotatably connected with the telescopic rod of cylinder one 303 respectively, the bottom end of two cylinder one 303 is rotatably connected with support table 301, the middle part of two clamping plates 302 is provided with semicircular aperture 302a.

[0018] Place the shaft workpiece in chuck 201, control extrusion assembly 204 to push annular block one 203a and annular block two 202a to move together, in turn drive threaded tube 202 and connecting pipe 203 to move out of through hole 101 a distance, threaded tube 202 can make clamping groove 102 drive chuck 201 to clamp when moving, so that chuck 201 clamps the shaft workpiece, the clamping assembly 205 on both sides of connecting pipe 203 can prevent connecting pipe 203 from rotating, in turn can avoid threaded tube 202 from rotating, so that the shaft workpiece also cannot rotate, the telescopic rod of two cylinder one 303 is elongated to make two clamping plates 302 rotate and combine, the semicircular aperture 302a provided in the middle part of two clamping plates 302 can support the shaft workpiece, reduce the vibration of the shaft workpiece.

[0019] In the embodiment, the extrusion assembly 204 includes two support plates 204a, which are symmetrically arranged on the side walls of the rack 100 at both sides of the connecting pipe 203, and the outer wall of the connecting pipe 203 is sleeved with a tensioning piece 204b and an extrusion piece 204c.

[0020] In the embodiment, the tensioning piece 204b includes a ring-shaped block three 204b-1, which is sleeved on the outer wall of the connecting pipe 203 at one side of the ring-shaped block one 203a, and a plurality of installation grooves 204b-2 are formed in the outer wall of the ring-shaped block three 204b-1 in the circumferential direction, and a tensioning claw 204b-3 is movably connected to the inner wall of the installation groove 204b-2 through a bolt.

[0021] In the embodiment, the extrusion piece 204c includes a ring-shaped block four 204c-1 and an arc-shaped shell 204c-2 connected to each other, which are sleeved on the outer wall of the connecting pipe 203 at one side of the ring-shaped block three 204b-1, and an ear plate 204c-3 is arranged at both sides of the ring-shaped block four 204c-1, and an installation plate one 204c-4 is arranged at the bottom end of each of the two support plates 204a, and a pneumatic cylinder two 204c-5 is arranged on the side wall of the installation plate one 204c-4, and the extension rod of the pneumatic cylinder two 204c-5 is fixedly connected to the ear plate 204c-3.

[0022] The extension rod of the pneumatic cylinder two 204c-5 is controlled to retract, thereby driving the ear plate 204c-3 at both sides of the ring-shaped block four 204c-1 to move, when the ring-shaped block four 204c-1 and the arc-shaped shell 204c-2 are moved by the tensioning force towards the tensioning claw 204b-3, the tensioning claw 204b-3 moves across the arc-shaped shell 204c-2 until the one end of the tensioning claw 204b-3 is in the clamping state with the bottom wall of the installation groove 204b-2 and cannot rotate, at this time, the tensioning claw 204b-3 is also moved by the force towards the ring-shaped block one 203a at the end of the connecting pipe 203, thereby pushing the threaded pipe 202 to move out of the through hole 101 by a distance, and this distance can make the inner wall of the clamping groove 102 clamp the shaft workpiece in the inner part of the chuck 201.

[0023] In the embodiment, the clamping assembly 205 includes installation plate twos 205a arranged at the bottom end of the two support plates 204a respectively, and pneumatic cylinder threes 205b are symmetrically arranged on the side wall of each of the two installation plate twos 205a respectively, and arc-shaped clamping plates 205c are arranged at the end of the extension rod of each of the two pneumatic cylinder threes 205b.

[0024] After the pneumatic cylinder three 205b is started, the arc-shaped clamping plate 205c at the end of the extension rod of each of the two pneumatic cylinder threes 205b clamps the connecting pipe 203 at both sides, so that the threaded pipe 202 and the shaft workpiece cannot rotate.

[0025] In the embodiment, the semicircular notch 302a is provided with an arc-shaped rubber pad 302b.

[0026] The arc-shaped rubber pad 302b can reduce vibration and increase friction between the arc-shaped rubber pad 302b and the outer wall of the shaft workpiece.

[0027] Working principle: the shaft workpiece is placed in the chuck 201, the extension rod of the control cylinder 204c-5 is retracted, and the ear plates 204c-3 on both sides of the annular block 204c-1 are moved, when the annular block 204c-1 and the arc-shaped shell 204c-2 are pulled towards the tension claw 204b-3, the tension claw 204b-3 moves across the arc-shaped shell 204c-2 until the end of the tension claw 204b-3 is in the clamping state with the bottom wall of the installation groove 204b-2 and cannot rotate, the tension claw 204b-3 is also forced to move towards the annular block 203a at the end of the connecting pipe 203, and then the threaded pipe 202 is pushed out of the through hole 101 by a distance, which can make the clamping groove 102 inside wall clamp the shaft workpiece in the chuck 201, after the opening of the cylinder 205b, the arc-shaped clamping plates 205c at the ends of the extension rods of the two cylinders 205b clamp the two sides of the connecting pipe 203, so that the threaded pipe 202 and the shaft workpiece cannot rotate, the extension rods of the two cylinders 303 are elongated to make the two clamping plates 302 rotate and combine, the semicircular notches 302a in the middle of the two clamping plates 302 can support the shaft workpiece and reduce the vibration of the shaft workpiece, and the arc-shaped rubber pad 302b can reduce vibration and increase friction between the arc-shaped rubber pad 302b and the outer wall of the shaft workpiece.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A clamping device for shaft-type workpieces, characterized in that: The utility model relates to a kind of supporting mechanism and clamping mechanism, including rack (100), clamping mechanism (200) and support mechanism (300), the middle part of the rack (100) is provided with through hole (101), the through hole (101) one end is communicated with outside by clamping groove (102), the clamping mechanism (200) includes chuck (201) movably arranged in the clamping groove (102), the inner wall of the clamping groove (102) is matched with chuck (201), one end of the chuck (201) is threadedly connected with threaded tube (202), the threaded tube (202) extends to the outside of the rack (100) by through hole (101), one side of the through hole (101) is rotatably provided with connecting pipe (203), the connecting pipe (203) is sleeved on the outside of threaded tube (202), the connecting pipe (203) end is provided with annular block one (203a), the threaded tube (202) end is provided with annular block two (202a), the end surface of the annular block one (203a) is provided with multiple bolts in the circumferential direction, multiple bolts pass through annular block two (202a) and are threadedly connected with nut, the outer wall of the connecting pipe (203) is sleeved with extrusion assembly (204) matched with annular block one (203a), the connecting pipe (203) both sides are provided with clamping assembly (205), the support mechanism (300) includes support table (301) arranged on the side wall of the rack (100), the top of the support table (301) is rotatably connected with the bottom of two clamping plates (302), two clamping plates (302) are symmetrically arranged on the both sides of chuck (201), the top of the two clamping plates (302) is rotatably connected with the telescopic rod of cylinder one (303) respectively, the bottom of two cylinder one (303) is rotatably connected with support table (301), the middle part of two clamping plates (302) is provided with semicircular gap (302a).

2. A shaft workpiece chucking device according to claim 1, characterized by: The extrusion assembly (204) includes two support plates (204a), two support plates (204a) are symmetrically arranged on the side wall of the rack (100) on the both sides of the connecting pipe (203), the outer wall of the connecting pipe (203) is sleeved with tensioning piece (204b) and extrusion piece (204c).

3. A shaft workpiece chucking device according to claim 2, characterized in that: The tensioning piece (204b) includes annular block three (204b-1), the annular block three (204b-1) is sleeved on the outer wall of the connecting pipe (203) on one side of the annular block one (203a), the outer wall of the annular block three (204b-1) is provided with several installation grooves (204b-2) in the circumferential direction, the inner wall of the installation groove (204b-2) is movably connected with tensioning claw (204b-3) by bolt.

4. A shaft workpiece chucking device according to claim 3, characterized in that: The extrusion piece (204c) comprises annular blocks four (204c-1) and arc shells (204c-2) connected with each other, the annular blocks four (204c-1) and the arc shells (204c-2) are sleeved on the outer wall of the connecting pipe (203) on one side of the annular blocks three (204b-1), the two sides of the annular blocks four (204c-1) are provided with lug plates (204c-3), the bottom ends of the two support plates (204a) are respectively provided with mounting plates one (204c-4), the side wall of the mounting plates one (204c-4) is provided with a second air cylinder (204c-5), and the telescopic rod of the second air cylinder (204c-5) is fixedly connected with the lug plate (204c-3).

5. A shaft workpiece chucking device according to claim 4, characterized in that: The clamping assembly (205) comprises mounting plates two (205a) arranged at the bottom ends of the two support plates (204a) respectively, the side walls of the two mounting plates two (205a) are respectively and symmetrically provided with third air cylinders (205b), and the end portions of the telescopic rods of the two third air cylinders (205b) are provided with arc clamping plates (205c).

6. A shaft workpiece chucking device as set forth in claim 1, characterized by: An arc-shaped rubber pad (302b) is arranged in the semicircular notch (302a).

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