CN214489128U

CN214489128U - Special fixture for screw tap

Info

Publication number: CN214489128U
Application number: CN202120546291.XU
Authority: CN
Inventors: 王宏波; 李文磊
Original assignee: Zhejiang Ivke Machinery Technology Co ltd
Current assignee: Zhejiang Ivke Machinery Technology Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-10-26
Anticipated expiration: 2031-03-16

Abstract

The utility model belongs to the technical field of tool fixtures, and relates to a special fixture for a screw tap, which comprises a workbench, one side of the workbench is provided with a clamp arranged in the clamp seat, the other side of the workbench is provided with a tail frame, a clamp thimble and a tail frame thimble for clamping two ends of the screw tap are respectively arranged on the clamp and the tail frame, a pair of clamping arm mounting plates provided with clamping arms are arranged at the upper side and the lower side of the clamp, the front ends of the clamping arm mounting plates are respectively hinged at the head part of the clamp, the clamp is internally and axially provided with an air cylinder, the head part of an expansion link of the air cylinder is provided with a conical surface, the upper side and the lower side of the conical surface are provided with slide blocks, the inner sides of the slide blocks are provided with inclined planes matched with the conical surface, the outer end of the sliding block is connected with the rear end of the clamping arm mounting plate in an abutting mode, the air cylinder drives the sliding block to move along the radial direction and drive the clamping arm mounting plate to rotate, and the clamping arm mounting plate drives the front end of the clamping arm to clamp the outer circular surface of the screw tap. The utility model provides a screw tap special fixture has strengthened the stability of anchor clamps, has improved the precision of screw tap processing.

Description

Special fixture for screw tap

Technical Field

The utility model belongs to the technical field of frock clamp, a screw tap special fixture is related to.

Background

With the rapid development of numerical control machine tools, the requirements on threaded tools are higher and higher, while a tap, which is a main tool for machining threaded holes, occupies a high proportion in the thread machining, and the geometric accuracy of the tap is directly reflected on a workpiece to be machined, so that the requirements on machine tools for machining threads of the tap are extremely high. The tap needs to use a tap clamp during processing, and the tap clamp has great influence on the processing precision of the tap. The existing screw tap clamp mostly uses a group of oppositely arranged tops to clamp two ends of a screw tap, and the clamp is lack of stability during screw tap processing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a screw tap special fixture, strengthened the stability of anchor clamps, improved the precision of screw tap processing.

In order to solve the above technical problem, the purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a screw tap special fixture, includes the workstation, one side of workstation is provided with the anchor clamps of installing in the anchor clamps seat, and the opposite side is provided with the tailstock, is provided with anchor clamps thimble and tailstock thimble at centre gripping screw tap both ends on anchor clamps and the tailstock respectively, the upper and lower both sides of anchor clamps are provided with a pair of arm lock mounting panel of installing the arm lock, the front end of arm lock mounting panel articulates respectively at the head of anchor clamps, the axial is provided with the cylinder in the anchor clamps, and the head of cylinder telescopic link is provided with the conical surface, and the upper and lower both sides of conical surface are provided with the slider, the inboard of slider be provided with conical surface complex inclined plane, the outer end of slider is contradicted with the rear end of arm lock mounting panel and is connected, and cylinder drive slider is along radial movement and drive arm lock mounting panel rotation, the outer disc of front end centre gripping screw tap of arm lock is driven to the arm lock mounting panel.

In foretell screw tap special fixture, the middle part of arm lock articulates on the arm lock mounting panel, and the rear end of arm lock is provided with waist type hole, be provided with positioning bolt on the arm lock mounting panel, positioning bolt slides and establishes in waist type hole, be provided with the elastic component that the front end of drive arm lock moved to the inboard between arm lock mounting panel and the arm lock.

In the above special fixture for screw taps, a driving bolt is arranged at the rear end of the clamping arm mounting plate, the inner end face of the driving bolt extends out of the clamping arm mounting plate and is in abutting connection with the outer end face of the slider, and the inner end face of the driving bolt is preferably set to be an arc face.

In the above special fixture for taps, an elastic member for driving the clamping arm mounting plate to reset is arranged between the clamping arm mounting plate and the fixture.

In the above-mentioned special tap fixture, the elastic member may be a tension spring or other similar functional components.

In the above special fixture for screw taps, the worktable is provided with a transverse guide rail, the transverse guide rail is provided with a dragging plate in a sliding manner, and the fixture seat and the tailstock are arranged on two sides of the dragging plate.

In the above special fixture for a screw tap, the carriage is driven by a motor and is driven by a screw rod, and the position of the fixture on the worktable can be adjusted by adjusting the position of the carriage.

In the above special fixture for a screw tap, the dragging plate is provided with a transverse tailstock guide rail, the tailstock is slidably arranged on the tailstock guide rail, and the distance between a tailstock ejector pin and a fixture ejector pin can be changed by adjusting the position of the tailstock.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses an increase on anchor clamps and set up the arm lock, the outer disc of tight screw tap can be pressed from both sides to the arm lock during centre gripping screw tap to make anchor clamps centre gripping screw tap that can be more stable, and then improved the machining precision that the screw tap adds man-hour.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

reference numerals: 1. a work table; 2. a clamp seat; 3. a clamp; 4. a tailstock; 5. a clamp thimble; 6. a tail frame thimble; 7. clamping arms; 8. mounting plates for the clamping arms; 9. positioning the bolt; 10. a transverse guide rail; 11. a carriage; 12. a motor; 13. a tailstock guide rail.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1-2:

a special fixture 3 for a screw tap comprises a workbench 1, wherein a transverse guide rail 10 is arranged on the workbench 1, a dragging plate 11 is arranged on the transverse guide rail 10 in a sliding manner, the dragging plate 11 is driven by a motor 12 and is driven by a screw rod, a fixture seat 2 is arranged on one side of the dragging plate 11, a fixture 3 is arranged in the fixture seat 2, a transverse tailstock guide rail 13 is arranged on the other side of the dragging plate 11, a tailstock 4 is arranged on the tailstock guide rail 13 in a sliding manner, fixture ejector pins 5 and tailstock ejector pins 6 for clamping two ends of the screw tap are respectively arranged on the fixture 3 and the tailstock 4, a pair of clamping arm mounting plates 8 provided with clamping arms 7 are arranged on the upper side and the lower side of the fixture 3, the front ends of the clamping arm mounting plates 8 are respectively hinged to the head of the fixture 3, an air cylinder is axially arranged in the fixture 3, the head of an expansion rod of the air cylinder is provided with a conical surface, conical surface is arranged on the upper side and the lower side of the conical surface, and an inclined surface matched with the inner side of the sliding block, the outer end of slider is contradicted with the rear end of arm lock mounting panel 8 and is connected, and cylinder drive slider radially removes and drives arm lock mounting panel 8 and rotate, and arm lock mounting panel 8 drives the outer disc of front end centre gripping screw tap of arm lock 7, be provided with the elastic component that drive arm lock mounting panel 8 resets between arm lock mounting panel 8 and anchor clamps 3.

The utility model discloses a working process is: the two ends of the screw tap are clamped through the fixture ejector pin 5 and the tail frame ejector pin 6, then the telescopic rod of the air cylinder extends forwards, the telescopic rod extending forwards drives the sliding block to slide outwards, the sliding block sliding outwards pushes the clamping arm mounting plate 8 to rotate around the hinged point, and the clamping arms 7 move oppositely along with the sliding block, so that the outer circular surface of the screw tap is clamped.

For better centre gripping screw tap, the middle part of arm lock 7 articulates on arm lock mounting panel 8, and the rear end of arm lock 7 is provided with waist type hole, be provided with positioning bolt 9 on the arm lock mounting panel 8, positioning bolt 9 is slided and is established in waist type hole, be provided with the elastic component that the front end of drive arm lock 7 moved to the inboard between arm lock mounting panel 8 and the arm lock 7. Above-mentioned structure has become elastic connection with the rigid connection of arm lock 7 with the screw tap, centre gripping screw tap that both can be better, can prevent again that arm lock 7 from contracting too big clamp bad screw tap.

For better drive arm lock mounting panel 8, the rear end of arm lock mounting panel 8 is provided with drive bolt, drive bolt's interior terminal surface extends outside arm lock mounting panel 8 and contradict with the outer terminal surface of slider and be connected, drive bolt's interior terminal surface is preferred to be set up to the arcwall face, and drive bolt outwards removes when the slider outwards slides, and then drives two arm lock mounting panels 8 and move in opposite directions.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A special fixture for a screw tap comprises a workbench (1), wherein one side of the workbench (1) is provided with a fixture (3) arranged in a fixture seat (2), the other side of the workbench is provided with a tail frame (4), the fixture (3) and the tail frame (4) are respectively provided with a fixture thimble (5) and a tail frame thimble (6) for clamping two ends of the screw tap, the special fixture is characterized in that the upper side and the lower side of the fixture (3) are provided with a pair of clamp arm mounting plates (8) provided with clamp arms (7), the front ends of the clamp arm mounting plates (8) are respectively hinged at the head of the fixture (3), an air cylinder is axially arranged in the fixture (3), the head of an air cylinder telescopic rod is provided with a conical surface, the upper side and the lower side of the conical surface are provided with sliding blocks, the inner sides of the sliding blocks are provided with inclined surfaces matched with the conical surface, the outer ends of the sliding blocks are connected with the rear ends of the clamp arm mounting plates (8) in an abutting mode, the cylinder drives the sliding block to move along the radial direction and drives the clamping arm mounting plate (8) to rotate, and the clamping arm mounting plate (8) drives the front end of the clamping arm (7) to clamp the outer circular surface of the screw tap.

2. The special fixture for taps according to claim 1, wherein the middle part of the clamping arm (7) is hinged to the clamping arm mounting plate (8), a kidney-shaped hole is formed in the rear end of the clamping arm, a positioning bolt (9) is arranged on the clamping arm mounting plate (8), the positioning bolt (9) is slidably arranged in the kidney-shaped hole, and an elastic member for driving the front end of the clamping arm (7) to move inwards is arranged between the clamping arm mounting plate (8) and the clamping arm (7).

3. The special clamp for the screw tap according to claim 1, wherein a driving bolt is arranged at the rear end of the clamping arm mounting plate (8), and the inner end face of the driving bolt extends out of the clamping arm mounting plate (8) and is connected with the outer end face of the sliding block in an abutting mode.

4. The special clamp for taps according to claim 1, wherein an elastic element for driving the clamping arm mounting plate (8) to reset is arranged between the clamping arm mounting plate (8) and the clamp (3).

5. The special fixture for taps according to claim 1, wherein a transverse guide rail (10) is arranged on the worktable (1), a carriage (11) is slidably arranged on the transverse guide rail (10), and the fixture base (2) and the tailstock (4) are arranged on two sides of the carriage (11).

6. The special tap fixture according to claim 5, wherein the carriage (11) is driven by a motor (12) and is driven by a screw rod.

7. The special tap fixture as claimed in claim 5, wherein the carriage (11) is provided with a transverse tailstock guide rail (13), and the tailstock (4) is slidably arranged on the tailstock guide rail (13).