CN114800246A

CN114800246A - Vertical honing machine with translation automatic centering clamp

Info

Publication number: CN114800246A
Application number: CN202210732082.3A
Authority: CN
Inventors: 周志平; 杨定文
Original assignee: Changzhou Kairuilai Precision Tools Co ltd
Current assignee: Changzhou Kairuilai Precision Tools Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-07-29
Anticipated expiration: 2042-06-27
Also published as: CN114800246B

Abstract

The invention relates to a vertical honing machine with a translation automatic centering clamp, which comprises a rack, a spindle box, a workpiece table, a translation automatic centering clamp and a lifting table, wherein the translation automatic centering clamp comprises a translation floating device and a universal centering floating device, a workpiece positioning seat of the translation floating device is supported on a base through a thrust bearing assembly and is used for horizontal floating, the universal centering floating device comprises a floating seat, a thrust bearing assembly, a cross universal frame assembly and a clamping spring, the floating seat can be suspended below the lifting table in a vertically and horizontally floating mode through a suspension rod penetrating through a suspension hole, an upper cavity and a lower cavity which are separated through a partition plate are arranged in the floating seat, the thrust bearing assembly is arranged in the upper cavity, the cross universal frame assembly is arranged in the lower cavity, and the clamping spring acts on the upper end face of the thrust bearing assembly. The beneficial effects are that: the clamp can effectively clamp and fix workpieces with irregular shapes, can automatically center and ensure the honing precision.

Description

Vertical honing machine with translation automatic centering clamp

Technical Field

The invention relates to the technical field of honing equipment, in particular to a vertical honing machine with a translation automatic centering clamp.

Background

For example, the chinese patent CN112975734A discloses a honing feeding mechanism and a vertical honing machine having the mechanism, which includes a frame and a spindle box, wherein the spindle box is mounted on the frame to drive a honing tool to perform a honing motion of synchronously rotating and reciprocating up and down.

The workpiece clamps of the conventional honing equipment are generally classified into a vertical clamping type workpiece clamp and an outer wall clamping type workpiece clamp according to a clamping manner. For example, a rapid clamping device disclosed in chinese patent CN212145948U clamps a workpiece by an outer wall clamping method.

The existing workpiece clamp adopting an up-down clamping mode is not suitable for clamping workpieces with irregular appearances, particularly workpieces with unparallel upper end surfaces and lower end surfaces, and the workpiece clamp adopting an outer wall clamping mode is not suitable for clamping thin-wall workpieces.

In the face of the requirement of high-precision honing of thin-wall workpieces with irregular shapes, particularly thin-wall workpieces with non-parallel upper and lower end surfaces, a proper universal clamp is lacked in the prior art.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the vertical honing machine with the translation automatic centering clamp can effectively clamp workpieces with irregular shapes and unparallel two end surfaces.

The technical scheme adopted by the invention for solving the technical problems is as follows: a vertical honing machine with a translational automatic centering clamp comprises a rack, a spindle box and a workpiece platform, wherein the spindle box is arranged on the rack, the vertical honing machine also comprises the translational automatic centering clamp and a lifting platform, the lifting platform is arranged on the rack in a liftable manner, the lifting platform is positioned below the spindle box, the translational automatic centering clamp comprises a translational floating device arranged on the workpiece platform and a universal centering floating device arranged on the lifting platform, the lifting platform and the universal centering floating device are provided with through holes for honing tools to pass through, the translational floating device comprises a base, a thrust bearing component and a workpiece positioning seat, the base is arranged on the workpiece platform, the workpiece positioning seat is supported on the base through the thrust bearing component and is used for horizontal floating, the universal centering floating device comprises a floating seat, thrust, a cross universal frame component consisting of an inner balancing ring and an outer balancing ring and a clamping spring, the lifting platform is provided with a suspension hole, the floating seat can be suspended below the lifting platform in an up-down and horizontal floating mode through a suspension rod penetrating through the suspension hole, an upper cavity and a lower cavity which are separated through a partition plate are formed in the floating seat, the thrust bearing assembly is installed in the cavity above and used for supporting the floating seat to horizontally float relative to the lifting platform, the cross universal frame assembly is installed in the cavity below, and the clamping spring acts on the upper end face of the thrust bearing assembly and is used for pushing the floating seat to reset to a low point position floating up and down.

Further limiting, the suspension rod is a bolt, the head of the bolt is positioned above the suspension hole, a screw rod of the bolt penetrates through the suspension hole and is screwed into a threaded hole of the floating seat, the floating seat can be suspended below the lifting platform in an up-and-down and horizontal floating mode, and a horizontal floating gap exists between the screw rod and the suspension hole.

Further limited, a pressing ring is arranged in an inner hole of the inner balance ring.

Further limiting, a workpiece limiting stop lever is arranged on the workpiece table or the base and used for stopping one side of the workpiece to limit the workpiece to rotate towards the honing rotating direction.

The invention has the beneficial effects that: the automatic clamping device can effectively clamp and fix workpieces, circular disc workpieces or thin-wall workpieces which are irregular in appearance and unparallel in upper and lower end surfaces, can automatically center, is simple, convenient, efficient, accurate and reliable in repeated precision, and facilitates realization of full automation on a vertical honing machine.

The universal centering floating device can horizontally float and elastically clamp a workpiece, and the clamping spring can enable the universal centering floating device to have a certain clamping stroke, so that the precision requirement of lifting control of the lifting platform is reduced, and the workpiece is prevented from being clamped too tightly.

Drawings

The invention is described in further detail below with reference to the drawings and the detailed description;

fig. 1 is a perspective view of a vertical honing machine of the present invention;

fig. 2 is a front view schematically illustrating the vertical honing machine according to the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view at B of FIG. 3;

FIG. 5 is an enlarged view at C of FIG. 3;

FIG. 6 is an overall state view of the translating self-centering fixture of the present invention mounted on a lift table;

FIG. 7 is an overall state view of the translating self-centering fixture of the present invention;

FIG. 8 is a schematic structural view of the universal centering and floating device of the present invention;

FIG. 9 is a schematic structural view of a cross gimbal assembly of the present invention;

in the figure, 1, a machine frame, 2, a spindle box, 3, a lifting platform, 4, a honing tool, 5, a hydraulic oil cylinder, 6, a workpiece, 7, a workpiece platform, 8, a base, 9, a thrust bearing assembly, 9-1, an upper gasket, 9-2, a bearing assembly, 9-3, a lower gasket, 10, a workpiece positioning seat, 11, a floating seat, 11-1, a partition plate, 12, an inner balance ring, 13, an outer balance ring, 14, a clamping spring, 15, a rotating shaft, 16, a pressing ring, 17, a workpiece limiting stop lever and 18 are suspended rods.

Detailed Description

As shown in fig. 1 to 9, the vertical honing machine with the translational automatic centering fixture comprises a frame 1, a spindle box 2, a workpiece table 7, the translational automatic centering fixture and a lifting table 3, wherein the spindle box 2 is mounted on the frame 1, the lifting table 3 is mounted on the frame 1 in a lifting manner, the lifting table 3 is located below the spindle box 2, and the lifting table 3 is driven to lift through a hydraulic oil cylinder 5.

The translation automatic centering fixture comprises a translation floating device arranged on a workpiece table 7 and a universal centering floating device arranged on a lifting table 3, wherein through holes for honing tools 4 to pass through are formed in the lifting table 3 and the universal centering floating device, workpieces 6 extending from top to bottom for honing inner holes are formed in the lifting table 3 and the translation floating device also has through holes for honing the tools 4 to pass through.

As shown in fig. 5, the translational floating device comprises a base 8, a thrust bearing assembly 9 and a workpiece positioning seat 10, wherein the base 8 is fixed on the workpiece table 7, and the workpiece positioning seat 10 is supported on the base 8 through the thrust bearing assembly 9 for horizontal floating.

Specifically, base 8 and work piece positioning seat 10 all have the centre bore as the via hole, simultaneously, still have convex retaining ring on the up end of base 8, and the lower terminal surface of work piece positioning seat 10 has annular groove, and annular groove's inner wall downwardly extending inserts in base 8's the centre bore, leaves the horizontal clearance that floats between annular groove's inner wall and base 8's the centre bore, and annular groove's outer wall cover is in the outside of retaining ring and also leaves the horizontal clearance that floats between.

The thrust bearing assembly 9 comprises an upper washer 9-1, a bearing assembly 9-2 and a lower washer 9-3, the bearing assembly 9-2 is positioned between the upper washer 9-1 and the lower washer 9-3, one of two end surfaces of the upper washer 9-1 and the lower washer 9-3 which are opposite to each other is a plane surface, the other end surface is provided with a bearing groove, and a bearing of the bearing assembly 9-2 is positioned to roll in the bearing groove. An upper gasket 9-1 and a lower gasket 9-3 of a thrust bearing assembly 9 of the translational floating device respectively abut against the bottom of the annular groove and the upper end face of the base 8, the upper gasket 9-1 is sleeved on a convex neck at the root part of the inner wall of the annular groove, the inner side face of the upper gasket 9-1 is tightly matched with the convex neck, and the outer side face of the lower gasket 9-3 is tightly matched with the inner side face of the retainer ring.

As shown in fig. 4 and 8, the universal centering and floating device includes a floating seat 11, a thrust bearing assembly 9, a cross gimbal assembly composed of an inner gimbal ring 12 and an outer gimbal ring 13, and a clamping spring 14, wherein the lifting platform 3 has a suspension hole, the floating seat 11 is suspended below the lifting platform 3 in a vertically and horizontally floating manner by a suspension rod 18 penetrating the suspension hole, the floating seat 11 has an upper chamber and a lower chamber separated by a partition plate 11-1, the thrust bearing assembly 9 is installed in the upper chamber for supporting the floating seat 11 to float horizontally relative to the lifting platform 3, the cross gimbal assembly is installed in the lower chamber, the inner gimbal ring 12 is used for pressing on the workpiece 6, and the bearing assembly clamping spring 14 acts on the upper end surface of the thrust 9 for pushing the floating seat 11 to return to a low point position floating vertically.

As shown in fig. 9, the cross gimbal assembly comprises an inner gimbal 12 and an outer gimbal 13, the outer gimbal 13 is mounted in a lower chamber by two coaxial rotating shafts 15 to swing, the inner gimbal 12 is mounted in the outer gimbal 13 by two coaxial rotating shafts 15 to swing, and the axes of the two rotating shafts 15 of the outer gimbal 13 are crossed with the axes of the two rotating shafts 15 of the inner gimbal 12.

The suspension rod 18 is a bolt, the head of the bolt is positioned above the suspension hole and used for limiting the upper end, the screw rod of the bolt penetrates through the suspension hole and is screwed into the threaded hole of the floating seat 11, the floating seat 11 can be suspended below the lifting platform 3 in a vertically and horizontally floating manner, and a horizontal floating gap exists between the screw rod and the suspension hole.

A clamping ring 16 is arranged in the inner hole of the inner balancing ring 12. The clamping ring 16 is made of nylon, and the inner balance ring 12 is pressed on the workpiece 6 through the clamping ring 16. The advantage of the design of the inner balancing ring 12 pressed against the workpiece 6 by the clamping ring 16 is that: the appropriate clamping ring 16 can be adapted to the workpiece 6 and replaced after the clamping ring 16 has worn out, without the need to replace the inner balancing ring 12.

The suspension rod 18 of the universal centering floating device enables the floating seat 11 to rotate only in a limited range, and can play a role in limiting the rotation of the workpiece 6 to the honing rotation direction, but when the honing rotation force is large, the strength of the suspension rod 18 is limited, and in order to avoid the stress of the suspension rod 18 from deforming, the base 8 is additionally provided with the workpiece limiting stop rod 17 which is used for stopping on one side of the workpiece 6 and limiting the rotation of the workpiece 6 to the honing rotation direction, so that the stress of the suspension rod 18 is replaced, and the workpiece limiting stop rod 17 can also be arranged on the workpiece table 7.

The upper washer 9-1 of the thrust bearing assembly 9 in the floating seat 11 is floatably arranged up and down so that the clamping spring 14 acting on the upper washer 9-1 can press the components of the thrust bearing assembly 9 together.

Specifically, an upper gasket 9-1 of a thrust bearing assembly 9 in a floating seat 11 is sleeved on a convex ring protruding below a through hole of a lifting platform 3 to float up and down, the bottom of the lifting platform 3 is provided with a blind hole for mounting a clamping spring 14, the clamping spring 14 in the blind hole acts on the upper gasket 9-1, more than three clamping springs 14 are arranged and distributed in an equal distribution mode, and the upper gasket 9-1 is guaranteed to be evenly stressed by the springs. The upper end face of a partition plate 11-1 of the floating seat 11 is provided with a concave step structure, a lower gasket 9-3 is arranged in the step structure, and the outer side face of the lower gasket 9-3 is tightly matched with the inner side face of the step structure on the upper end face of the partition plate 11-1.

Taking the inner hole of the workpiece 6 with irregular honing appearance and non-parallel two end faces as an example, the working process of the embodiment is as follows:

firstly, the end face of a side hole of an inner hole of a workpiece 6, which is marked with the requirement of perpendicularity, is closely attached to a workpiece positioning seat 10 of a translational floating device to ensure the perpendicularity of the inner hole of the workpiece 6, then a lifting platform 3 is driven by a hydraulic oil cylinder 5 to descend, so that a pressing ring 16 of a universal centering floating device is pressed on the upper end face of the workpiece 6 to clamp and fix the upper end and the lower end of the workpiece 6, and clamping force is provided by a clamping spring 14;

then, the main spindle box 2 controls the honing tool 4 to descend, so that the honing head of the honing tool 4 sequentially passes through the lifting platform 3 and the through hole of the universal centering floating device to enter the inner hole of the workpiece 6;

then, starting the vertical honing machine to start honing;

after honing, the lifting platform 3 is lifted, the universal centering floating device is separated from the workpiece 6, and the honing head pulls out the inner hole of the workpiece 6, so that the workpiece 6 which is honed can be taken out.

Claims

1. The utility model provides a vertical honing machine with translation self-centering anchor clamps, includes frame (1), headstock (2) and work piece platform (7), and install in frame (1) headstock (2), characterized by: the honing tool positioning device is characterized by further comprising a translation automatic centering clamp and a lifting platform (3), wherein the lifting platform (3) is arranged on the rack (1) in a liftable mode, the lifting platform (3) is located below the spindle box (2), the translation automatic centering clamp comprises a translation floating device arranged on the workpiece platform (7) and a universal centering floating device arranged on the lifting platform (3), through holes for the honing tool (4) to pass through are formed in the lifting platform (3) and the universal centering floating device, the translation floating device comprises a base (8), a thrust bearing assembly (9) and a workpiece positioning seat (10), the base (8) is arranged on the workpiece platform (7), the workpiece positioning seat (10) is supported on the base (8) through the thrust bearing assembly (9) and used for horizontal floating, the universal centering floating device comprises a floating seat (11), the thrust bearing assembly (9), a cross universal frame assembly consisting of an inner balance ring (12) and an outer balance ring (13) and a clamping spring (14), the lifting platform (3) is provided with a suspension hole, the floating seat (11) can be suspended below the lifting platform (3) in a vertically and horizontally floating manner through a suspension rod (18) penetrating through the suspension hole, an upper chamber and a lower chamber which are separated by a partition plate (11-1) are arranged in the floating seat (11), the thrust bearing assembly (9) is arranged in the upper chamber and is used for supporting the floating seat (11) to horizontally float relative to the lifting platform (3), the cross universal frame assembly is arranged in the lower chamber, and the clamping spring (14) acts on the upper end face of the thrust bearing assembly (9) and is used for pushing the floating seat (11) to reset to a low point position floating vertically.

2. The vertical honing machine having a translating self-centering clamp of claim 1, wherein: the suspension rod (18) is a bolt, the head of the bolt is positioned above the suspension hole, a screw rod of the bolt penetrates through the suspension hole and is screwed into a threaded hole of the floating seat (11), the floating seat (11) can be suspended below the lifting platform (3) in a vertically and horizontally floating mode, and a horizontal floating gap exists between the screw rod and the suspension hole.

3. The vertical honing machine having a translating self-centering clamp of claim 1, wherein: and a pressing ring (16) is arranged in an inner hole of the inner balance ring (12).

4. The vertical honing machine having the translational self-centering clamp of claim 1, wherein: the workpiece table (7) or the base (8) is provided with a workpiece limiting stop lever (17) which is used for stopping one side of the workpiece (6) and limiting the workpiece (6) to rotate towards the honing rotation direction.