CN-121491781-B - Automatic positioning and centering clamp machining tool

CN121491781BCN 121491781 BCN121491781 BCN 121491781BCN-121491781-B

Abstract

The application discloses an automatic positioning and centering clamp processing tool which comprises a centering clamping device and a centering device, wherein the centering clamping device comprises a plurality of clamping jaws, a clamping linkage mechanism and a driving mechanism which are distributed along the circumference, the clamping linkage mechanism is connected with all the clamping jaws, the driving mechanism is connected with and drives at least one clamping jaw so as to enable all the clamping jaws to synchronously act, the centering device comprises a support frame, a centering fork mechanism and a centering linkage mechanism, the support frame is suitable for being detachably arranged on the clamping jaws, the centering fork mechanism and the centering linkage mechanism are arranged on the support frame, a first end of the centering linkage mechanism penetrates through the clamping jaws and extends to the clamping side of the clamping jaws, a second end of the centering linkage mechanism is connected with the centering fork mechanism, and when the clamping side of the clamping jaw is close to a workpiece, the first end of the centering linkage mechanism is suitable for contacting the workpiece and synchronously acts with the second end of the centering fork mechanism so as to enable the centering fork mechanism to move to the workpiece.

Inventors

Ren Zhelin
Zhuang Enming
LI YANPENG

Assignees

宁波金汇精密铸造有限公司

Dates

Publication Date: 20260512
Application Date: 20260108

Claims (10)

1. The automatic positioning and centering clamp processing tool is characterized by comprising a centering clamping device and a centering device, wherein the centering clamping device comprises a plurality of clamping jaws distributed along a circumference, a clamping linkage mechanism and a driving mechanism, the clamping linkage mechanism is connected with all the clamping jaws, the driving mechanism is connected with and drives at least one clamping jaw so as to enable all the clamping jaws to synchronously act, the centering device comprises a support frame, a centering fork mechanism and a centering linkage mechanism, the support frame is suitable for being detachably arranged on the clamping jaws, the centering fork mechanism and the centering linkage mechanism are arranged on the support frame, a first end of the centering linkage mechanism penetrates through the clamping jaws and extends to a clamping side of the clamping jaws, a second end of the centering linkage mechanism is connected with the centering fork mechanism, and when the clamping side of the centering linkage mechanism is close to a workpiece, the first end of the centering linkage mechanism is suitable for contacting the workpiece and synchronously acts with the second end of the centering linkage mechanism so as to enable the centering fork mechanism to move to the workpiece; The workpiece is provided with a positioning opening, the positioning opening is communicated with the outside at least in the radial direction of the workpiece, positioning surfaces are symmetrically arranged on two sides of the positioning opening along the center axis of the workpiece, and the center fork separating mechanism is suitable for moving into the positioning opening and is engaged with the positioning surfaces on two sides.
2. The automatic positioning split middle clamp machining tool according to claim 1, wherein the split middle linkage mechanism comprises a push rod, a linkage rod and a connecting seat, the front end of the push rod is a first end of the split middle linkage mechanism, the front end of the connecting seat is a second end of the split middle linkage mechanism, two ends of the linkage rod are telescopic and are respectively in rotary connection with the rear end of the push rod and the rear end of the connecting seat, a rotary fulcrum is formed by rotary connection between two ends of the linkage rod and the supporting frame, and the length from the rotary fulcrum to the position where the linkage rod is connected with the push rod is smaller than the length from the rotary fulcrum to the position where the linkage rod is connected with the connecting seat.
3. An automatic positioning and centering clamp processing tool as set forth in claim 2, wherein the centering fork mechanism is mounted at the front end of the connecting seat and is adapted to move with the connecting seat, the centering fork mechanism comprises a first centering arm, a second centering arm and two adjusters, the first centering arm and the second centering arm are slidably arranged along a direction perpendicular to the moving direction of the connecting seat, one ends of the two adjusters respectively penetrate through the first centering arm and the second centering arm correspondingly and are connected with the connecting seat in a rotating manner, the first centering arm and the second centering arm are connected with the adjuster screw rod, and the adjusters are adapted to rotate to change the distance between the first centering arm or the second centering arm and the connecting seat.
4. An automatic positioning and centering clamp processing tool as set forth in claim 3, wherein the adjuster comprises an operation part and an adjusting shaft, the operation part is arranged at a first end of the adjusting shaft, a second end of the adjusting shaft penetrates through the first centering arm or the second centering arm to be connected with the connecting seat, a screw rod is connected between the adjusting shaft and the first centering arm, the adjusting shaft and the second centering arm are connected by the screw rod, the first end of the adjusting shaft is exposed to the outer side of the first centering arm or the second centering arm and is provided with an adjusting scale, the adjusting scale is suitable for indicating the adjusting distance of the first centering arm or the second centering arm, a contact inclined surface is arranged on the outer side of the first centering arm and the second centering arm, a connecting part is arranged on the first centering arm and the second centering arm and is parallel to the adjusting shaft, and the connecting part is in sliding fit with the connecting seat along the axial direction of the adjusting shaft.
5. An automatic positioning and centering clamp processing tool as set forth in claim 2, wherein a contact channel perpendicular to the clamping side is provided on the clamping jaw, the front end of the ejector rod is adapted to pass through the contact channel to be suitable for approaching and contacting the workpiece, a first reaming is formed on the non-clamping side of the contact channel, a docking shaft seat is provided on one side of the support frame away from the linkage rod, the ejector rod passes through the docking shaft seat, the docking shaft seat is adapted to be matched and inserted into the first reaming to guide the ejector rod to penetrate into the contact channel when the support frame is mounted on the clamping jaw, a second reaming is formed on the clamping side of the contact channel, the centering device further comprises a flexible gasket, the flexible gasket is adapted to be matched and embedded in the second reaming and hooped on the peripheral side of the ejector rod, the flexible gasket protrudes out of the second reaming, and the flexible gasket is adapted to contact the workpiece before the clamping jaw contacts the workpiece.
6. The automatic positioning and centering clamp processing tool as claimed in claim 1, wherein a plurality of first fixing holes are formed in the non-clamping side of the clamping jaw, the clamping jaw is suitable for being fixed by installing fasteners at the first fixing holes, a plurality of second fixing holes are formed in the supporting frame, and the second fixing holes are correspondingly matched with the first fixing holes when the supporting frame is arranged on the clamping jaw so as to be suitable for being fixed by original fasteners of the clamping jaw.
7. The automatic positioning and centering clamp processing tool disclosed in claim 1, wherein a convex ring is arranged on the periphery of the workpiece, a side joint surface and a top joint surface are arranged on the clamping jaw, the side joint surface is suitable for being abutted against the periphery of the workpiece, a containing cavity is formed in the clamping jaw and is suitable for being abutted against the lower surface of the convex ring, the upper side of the containing cavity is communicated with the top joint surface, at least one rotatable ball is arranged in the containing cavity, and the top end of the ball protrudes out of the top joint surface from the upper side of the containing cavity.
8. An automatic positioning and centering clamp processing tool as claimed in claim 1, wherein the clamping linkage mechanism comprises a connecting disc and a connecting rod, the clamping jaws are distributed along the circumferential direction of the connecting disc and are suitable for sliding along the radial direction of the connecting disc, the connecting rod connects the connecting disc and the clamping jaws, the connecting rod is eccentrically inclined at the connecting disc along the same direction, and the driving mechanism is suitable for driving part of the clamping jaws to slide and pushing the connecting disc to rotate so that all the clamping jaws slide synchronously.
9. An automatic positioning and centering clamp tooling as set forth in claim 8 wherein said drive mechanism comprises a driver located in the path of movement of one of said jaws and coupled to said jaws or wherein said drive mechanism comprises two drivers located in the path of movement of one of said jaws and coupled to respective sides of the path of movement of said jaws.
10. The automatic positioning and centering clamp processing tool as claimed in claim 1, wherein an elastic restorer is arranged between the first end and/or the second end of the centering linkage mechanism and the supporting frame, the elastic restorer is suitable for enabling the first end of the centering linkage mechanism to extend towards the clamping side of the clamping jaw, and the workpiece is of a columnar structure.

Description

Automatic positioning and centering clamp machining tool Technical Field The application relates to the technical field of tool fixtures, in particular to an automatic positioning and centering clamp processing tool. Background The centering clamping mechanism, also called automatic centering clamping mechanism, is a special device for simultaneously realizing workpiece positioning and clamping in machining, eliminates positioning errors through constant-speed movement or uniform elastic deformation of elements, ensures that the symmetry axis, plane or central line of the workpiece coincides with a machining reference accurately. However, the existing clamping tool has the following defects that for sleeve workpieces with more machining directions, the traditional centering clamping mechanism is required to take down the workpiece after clamping the sleeve workpieces and cutting the sleeve workpieces, change angles, accurately correct the angle and then carry out secondary clamping so as to realize machining of different surfaces and hole sites on the workpiece. Disclosure of Invention An object of the present application is to provide an automatically positioned split collet tooling that is capable of performing a quick split in self-centering collet. In order to achieve the aim, the technical scheme includes that the automatic positioning centering clamping processing tool comprises a centering clamping device and a centering clamping device, wherein the centering clamping device comprises a plurality of clamping jaws distributed along a circumference, a clamping linkage mechanism and a driving mechanism, the clamping linkage mechanism is connected with all the clamping jaws, the driving mechanism is connected with and drives at least one clamping jaw so as to enable all the clamping jaws to synchronously act, the centering device comprises a supporting frame, a centering fork mechanism and a centering linkage mechanism, the supporting frame is suitable for being detachably arranged on the clamping jaws, the centering fork mechanism and the centering linkage mechanism are arranged on the supporting frame, a first end of the centering linkage mechanism penetrates through the clamping jaws and extends to the clamping side of the clamping jaws, a second end of the centering linkage mechanism is connected with the centering fork mechanism, and when the clamping side of the centering linkage mechanism is close to a workpiece, the first end of the centering linkage mechanism is suitable for contacting the workpiece and synchronously acts with the second end of the centering linkage mechanism so that the centering fork mechanism moves to the workpiece. In some embodiments, the middle-split linkage mechanism comprises a push rod, a linkage rod and a connecting seat, the front end of the push rod is the first end of the middle-split linkage mechanism, the front end of the connecting seat is the second end of the middle-split linkage mechanism, two ends of the linkage rod are telescopic and are respectively connected with the rear end of the push rod and the rear end of the connecting seat in a rotating way, a rotating fulcrum is formed by rotating and connecting the two ends of the linkage rod with the support frame, and the length from the rotating fulcrum to the position of the push rod, which is connected with the linkage rod, is smaller than the length from the rotating fulcrum to the position of the connecting seat, which is connected with the linkage rod. In some embodiments, the middle fork mechanism is installed at the front end of the connecting seat and is suitable for moving along with the connecting seat, the middle fork mechanism comprises a first middle arm, a second middle arm and two regulators, the first middle arm and the second middle arm are arranged in a sliding mode along the direction perpendicular to the moving direction of the connecting seat, one ends of the two regulators respectively penetrate through the first middle arm and the second middle arm correspondingly and are connected with the connecting seat in a rotating mode, the first middle arm and the second middle arm are connected with the regulator screw rod, and the regulators are suitable for rotating to change the distance between the first middle arm or the second middle arm and the connecting seat. In some embodiments, the adjuster comprises an operation part and an adjusting shaft, the operation part is arranged at a first end of the adjusting shaft, a second end of the adjusting shaft penetrates through the first middle-branch arm or the second middle-branch arm to be connected with the connecting seat, a screw rod is arranged between the adjusting shaft and the first middle-branch arm, a screw rod is arranged between the adjusting shaft and the second middle-branch arm, the first end of the adjusting shaft is exposed to the outer side of the first middle-branch arm or the second middle-branch arm and is provided with an adj