Tool device for sleeve cutting machining

Abstract

The utility model provides a tool device for sleeve cutting machining. The tool device comprises a front shaft sleeve, a rear shaft sleeve and a U-shaped fixing frame, wherein the front shaft sleeve and the rear shaft sleeve are coaxially arranged at intervals, and the front shaft sleeve and the rear shaft sleeve are fixedly connected together through the U-shaped fixing frame. A fixed shaft is inserted into the front shaft sleeve in a penetrating mode, a movable shaft is inserted into the rear shaft sleeve in a penetrating mode, the rear end of the fixed shaft and the front end of the movable shaft are each provided with a sleeve plug, the two sleeve plugs are oppositely arranged and are in a step shape, and the minimum outer diameter of each sleeve plug is not larger than the inner diameter of a sleeve. The maximum outer diameters of the two sleeve plugs are respectively greater than the inner diameters of the front shaft sleeve and the rear shaft sleeve; a spring is sleeved on the movable shaft and between the sleeve plug and the rear shaft sleeve; a shifting fork rotationally connected with the movable shaft and the fixed frame is arranged between the rear end of the movable shaft and the rear end of the fixed frame, and the shifting fork is used for enabling the movable shaft to move backwards relative to the sliding sleeve. The tool device is installed on rotary cutting equipment, so that the sleeve can be cut, and the machining efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely relates to a frock device for shuttle sleeve cutting processing. BACKGROUND

[0002] In the field of steel bar connection, currently, the steel bar connection is mainly carried out by using the shuttle sleeve. However, the shuttle sleeve has certain particularity, the two ends thereof are conical, and the interior thereof is provided with a thread. The sleeve is generally cut and processed by using two kinds of processing modes, one is numerical control machining center cutting processing, in the processing process, the three-axis numerical control machining center is used to carry out spiral cutting, so as to uniformly divide the sleeve into three pieces or multiple pieces. Since the wall thickness of the sleeve is relatively thick, the single cutting amount is very small, which leads to low processing efficiency and high production cost. The other is plasma cutting processing, which has higher comprehensive advantages than the numerical control machining center processing, and thus is more widely applied. However, since the frock used for the plasma cutting is inconvenient to use, it is difficult to quickly and stably clamp the sleeve, and thus it is difficult to meet the production progress requirement, and further leads to high production cost.

[0003] Therefore, there is an urgent need for a frock device for sleeve cutting processing to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model solves the technical problem in the prior art and provides a frock device for sleeve cutting processing, so as to realize the quick and stable clamping of the sleeve.

[0005] In order to solve the above technical problem, the content of the utility model comprises:

[0006] A frock device for sleeve cutting processing comprises a front shaft sleeve and a rear shaft sleeve which are coaxial and are arranged at intervals, and a U-shaped fixing frame which is used for fixedly connecting the front shaft sleeve and the rear shaft sleeve together; a fixed shaft is inserted through the front shaft sleeve, an activity shaft is inserted through the rear shaft sleeve, the rear end of the fixed shaft and the front end of the activity shaft are respectively provided with a sleeve plug, the two sleeve plugs are oppositely arranged and are both stepped, the minimum outer diameter of the two sleeve plugs is not greater than the inner diameter of the sleeve, and the maximum outer diameter of the two sleeve plugs is respectively greater than the inner diameter of the front shaft sleeve and the rear shaft sleeve; a spring is sleeved on the activity shaft and located between the sleeve plug of the activity shaft and the rear shaft sleeve; the rear end of the activity shaft and the rear end of the fixing frame are both rotationally connected with a shift fork, and the shift fork is used for moving the activity shaft relative to the sliding sleeve rearward.

[0007] Preferably, the utility model further comprises a three-jaw chuck, and the front end of the fixed shaft is clamped on the three-jaw chuck.

[0008] Preferably, the two sleeve plugs are both three-step, the outer diameter of the first step and the third step of the two sleeve plugs are respectively the minimum outer diameter and the maximum inner diameter, and the outer diameter of the second step of the two sleeve plugs is greater than the inner diameter of the sleeve.

[0009] Preferably, the fixed shaft is hollow and tubular, a gas pipe is connected to the front pipe opening of the fixed shaft through a pneumatic rotary joint, the inner cavity of the fixed shaft is a compressed air passage, and a plurality of front slag discharge openings are arranged on the first step and the second step of the sleeve plug of the fixed shaft and are in communication with the compressed air passage.

[0010] Preferably, the movable shaft is hollow and tubular, the inner cavity of the movable shaft is a slag discharge passage, and a plurality of rear slag discharge openings are arranged on the first step and the second step of the sleeve plug of the movable shaft and are in communication with the slag discharge passage.

[0011] Preferably, the rear end of the movable shaft is sleeved with a sliding sleeve, the shift fork comprises a rod part and a U-shaped fork part in an integral structure, the rod part is hingedly connected to the rear end of the fixed frame through a pin shaft, and the fork part is rotatably connected to the left and right ends of the sliding sleeve through a pair of pins; the pin shaft and the pins are parallel to each other and perpendicular to the axial direction of the rear shaft sleeve.

[0012] Preferably, the fixed frame comprises a U-shaped main plate and a reinforcing rib fixedly arranged in the middle of the outer wall of the main plate, and the reinforcing rib makes the top of the fixed frame have a T-shaped structure at both ends, and the front shaft sleeve and the rear shaft sleeve are fixedly connected to the two T-shaped structures respectively.

[0013] Preferably, the top of the main plate is provided with an arc-shaped mounting groove which is open upward at both ends.

[0014] The utility model discloses a beneficial effect is:

[0015] The utility model provides a kind of tooling device for sleeve cutting processing, is installed on rotary cutting equipment, and the distance between two sleeve plugs can be easily increased by pulling shift fork, so as to facilitate sleeve to be quickly installed or removed, and sleeve plug resets under the action of spring after shift fork is loosened, so that sleeve can be stably clamped, therefore, the cutting efficiency of sleeve is greatly improved, the production progress demand is met, and production cost is reduced. DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 2 It is the sectional view of the utility model;

[0018] Figure 3 It is the structural schematic diagram of fixed shaft;

[0019] Figure 4 Structure diagram of the fixed shaft;

[0020] Figure 5 Structure diagram of the fixed frame;

[0021] Figure 6 Structure diagram of the puller;

[0022] In the figure: 1, three-jaw chuck, 2, fixed shaft, 21, compressed air passage, 22, front slag gap, 3, sleeve, 4, movable shaft, 41, slag passage, 42, rear slag gap, 5, spring, 6, sliding sleeve, 7, puller, 8, fixed frame, 9, pneumatic rotary joint, 10, air pipe, 11, pin, 12, pin shaft, 13, front shaft sleeve, 14, rear shaft sleeve. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. Those skilled in the art should understand that the embodiments are only to help understand the present application and should not be regarded as a specific limitation on the present application.

[0024] As Figures 1-6 shown, the present application provides a tool device for sleeve cutting processing, which comprises coaxial and spaced front shaft sleeve 13 and rear shaft sleeve 14 and U-shaped fixed frame 8 for fixing and connecting front shaft sleeve 13 and rear shaft sleeve 14 together; the opening of fixed frame 8 faces the area between front shaft sleeve 13 and rear shaft sleeve 14; fixed shaft 2 is inserted through front shaft sleeve 13, movable shaft 4 is inserted through rear shaft sleeve 14, and the rear end of fixed shaft 2 and the front end of movable shaft 4 are respectively provided with a sleeve plug, the two sleeve plugs are oppositely arranged and are both ladder-shaped, the minimum outer diameter of the two sleeve plugs is not greater than the inner diameter of sleeve 3, and the maximum outer diameter of the two sleeve plugs is respectively greater than the inner diameter of front shaft sleeve 13 and rear shaft sleeve 14; spring 5 is sleeved on movable shaft 4 and between the sleeve plug of movable shaft 4 and rear shaft sleeve 14; the rear end of movable shaft 4 and the rear end of fixed frame 8 are both rotationally connected with puller 7, and puller 7 is used for moving movable shaft 4 backward relative to sliding sleeve 6 to pull apart the distance between the two sleeve plugs.

[0025] When spring 5 is in a natural state, the distance between the two sleeve plugs is less than the length of sleeve 3, so it is necessary to move movable shaft 4 backward relative to sliding sleeve 6 by a certain distance by using puller 7, that is, to appropriately pull apart the two sleeve plugs, so as to put the sleeve 3 to be cut into the two sleeve plugs, at this time, spring 5 is stretched to store energy; then puller 7 is released, movable shaft 4 is reset forward under the action of spring 5, so as to fix and clamp the sleeve 3 to be cut between the two sleeve plugs by using the action of spring 5.

[0026] The tool device further comprises a three-jaw chuck 1 for fixing the whole tool device on a rotary cutting device, and the front end of the fixing shaft 2 is clamped on the three-jaw chuck 1. The sleeve 3 is cut by using a plasma cutting gun.

[0027] As shown in Figures 2-4 , the two sleeve plugs are both three-step ladder-shaped, the outer diameters of the first step and the third step of the two sleeve plugs are the minimum outer diameter and the maximum inner diameter respectively, and the outer diameters of the second step of the two sleeve plugs are both greater than the inner diameter of the sleeve 3. The minimum outer diameter parts of the two sleeve plugs, i.e. the first steps, are respectively inserted into the two barrel mouths of the sleeve 3, so that the sleeve 3 to be cut is clamped firmly.

[0028] As shown in Figure 2 , 3 , the fixing shaft 2 is hollow tubular, and a gas pipe 10 is connected to the front barrel mouth of the fixing shaft 2 through a pneumatic rotary joint 9, the inner cavity of the fixing shaft 2 is a compressed air passage 21, and a plurality of front slag discharge notches 22 are arranged on the first step and the second step of the sleeve plug of the fixing shaft 2, and the front slag discharge notches 22 are all in communication with the compressed air passage 21. During cutting, external compressed air is introduced into the compressed air passage 21 through the gas pipe 10, and part of the molten slag generated during cutting is blown out through the front slag discharge notches 22. The front slag discharge notches 22 are also used for avoiding the plasma cutting gun during cutting.

[0029] As shown in Figure 2 , 4 , the movable shaft 4 is hollow tubular, and the inner cavity of the movable shaft 4 is a slag discharge passage 41, and a plurality of rear slag discharge notches 42 are arranged on the first step and the second step of the sleeve plug of the movable shaft 4, and the rear slag discharge notches 42 are all in communication with the slag discharge passage 41. The compressed air blown from the front compressed air passage 21 passes through the sleeve during cutting and enters the slag discharge passage 41, blows out the molten slag after cutting, and part of the molten slag is discharged through the rear slag discharge notches 42. The rear slag discharge notches 42 are also used for avoiding the plasma cutting gun.

[0030] As shown in Figure 1 , 2 , 6, the rear end of the movable shaft 4 is sleeved with a sliding sleeve 6, the shift fork 7 comprises a rod part and a U-shaped fork part in an integral structure, the rod part is hinged to the rear end of the fixed frame 8 through a pin shaft 12, the fork part is rotatably connected to the left and right ends of the sliding sleeve 6 through a pair of pins 11, and the pin shaft 12 and the pins 11 are parallel to each other and perpendicular to the axial direction of the rear shaft sleeve 14.

[0031] As shown in Figure 5As shown, the fixing frame 8 comprises a U-shaped main plate 81 and a reinforcing rib 82 fixedly arranged in the middle of the outer wall of the main plate 81, and the reinforcing rib 82 makes the top of the fixing frame 8 have a T-shaped structure at both ends, and the front shaft sleeve 13 and the rear shaft sleeve 14 are fixedly connected with the two T-shaped structures respectively. The rear end of the reinforcing rib 82 is provided with a branch plate extending rearward, which is used for rotationally connecting with the rod part of the fork 7. The top of the main plate 81 is provided with an arc-shaped mounting slot opening upward at both ends, so as to facilitate the fixed installation of the front shaft sleeve 13 and the rear shaft sleeve 14.

[0032] In use, first, the three-jaw chuck 1 of the utility model is fixedly installed on the rotary cutting equipment, and the compressed air is introduced into the compressed air passage 21 through the air pipe 10; the rod part of the fork 7 is held and is pushed forward, and the fork part drives the sliding sleeve 6 to move rearward, and further drives the movable shaft 4 to move rearward, when the middle gap of the two sleeve plugs is sufficient to accommodate the clamping sleeve 3, the state is maintained, the sleeve 3 to be cut is installed at the first stepped part of the two sleeve plugs, after being in place, the fork 7 is loosened, the movable shaft 4 is reset under the action of the spring 5 and tightly clamps the sleeve 3 in the middle. Then, the rotary cutting equipment is started, the cutting gun makes linear cutting, the three-jaw chuck 1 drives the sleeve 3 to rotate, and the fixing frame 8 remains stationary, through the linear motion of the cutting gun and the rotary motion of the sleeve 3, the sleeve 3 is cut into three or more pieces of spiral uniform distribution. In the cutting process, the slag can be smoothly discharged from the front slag discharge gap 22, the rear slag discharge gap 42 and the slag discharge passage 41, the inner thread slag adhesion is reduced, and the thread is effectively protected from damage. After cutting is completed, the rod part of the fork 7 is held again and is pushed forward, so that the cut sleeve 3 can be removed.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tooling device for sleeve cutting, characterized by, The device comprises a front shaft sleeve (13) and a rear shaft sleeve (14) arranged coaxially and spaced apart, and a U-shaped fixing frame (8) fixedly connecting the front shaft sleeve (13) and the rear shaft sleeve (14) together; a fixed shaft (2) is arranged through the front shaft sleeve (13), and a movable shaft (4) is arranged through the rear shaft sleeve (14); the rear end of the fixed shaft (2) and the front end of the movable shaft (4) are respectively provided with a sleeve plug, the two sleeve plugs are oppositely arranged and are both ladder-shaped, the minimum outer diameter of the two sleeve plugs is not greater than the inner diameter of the sleeve (3), and the maximum outer diameter of the two sleeve plugs is respectively greater than the inner diameter of the front shaft sleeve (13) and the rear shaft sleeve (14); a spring (5) is arranged on the movable shaft (4) and between the sleeve plug of the movable shaft (4) and the rear shaft sleeve (14); a shift fork (7) is arranged between the rear end of the movable shaft (4) and the rear end of the fixing frame (8) and is rotatably connected to both, and the shift fork (7) is used for moving the movable shaft (4) rearward relative to the sliding sleeve (6).

2. The tooling apparatus for sleeve cutting as claimed in claim 1, wherein, The device further comprises a three-jaw chuck (1), and the front end of the fixed shaft (2) is clamped on the three-jaw chuck (1).

3. The tooling apparatus for sleeve cutting as claimed in claim 1, wherein, The two sleeve plugs are both three-step ladder-shaped, the outer diameter of the first step and the third step of the two sleeve plugs is respectively the minimum outer diameter and the maximum inner diameter, and the outer diameter of the second step of the two sleeve plugs is greater than the inner diameter of the sleeve (3).

4. The tooling apparatus for sleeve cutting as claimed in claim 3, wherein, The fixed shaft (2) is a hollow pipe, and a gas pipe (10) is connected to the front pipe opening of the fixed shaft (2) through a pneumatic rotary joint (9); the inner cavity of the fixed shaft (2) is a compressed air passage (21); and a plurality of front slag discharge notches (22) are arranged on the first step and the second step of the sleeve plug of the fixed shaft (2) and are in communication with the compressed air passage (21).

5. The tooling apparatus for sleeve cutting as claimed in claim 3, wherein, The movable shaft (4) is a hollow pipe, and the inner cavity of the movable shaft (4) is a slag discharge passage (41); and a plurality of rear slag discharge notches (42) are arranged on the first step and the second step of the sleeve plug of the movable shaft (4) and are in communication with the slag discharge passage (41).

6. The tooling apparatus for sleeve cutting as claimed in claim 1, wherein, The rear end of the movable shaft (4) is sleeved with a sliding sleeve (6); the shift fork (7) comprises a rod part and a U-shaped fork part in an integrated structure, the rod part is hinged to the rear end of the fixing frame (8) through a pin shaft (12), and the fork part is rotatably connected to the left and right ends of the sliding sleeve (6) through a pair of pins (11); the pin shaft (12) and the pins (11) are parallel to each other and perpendicular to the axial direction of the rear shaft sleeve (14).

7. The tooling apparatus for sleeve cutting as claimed in claim 1, wherein, The fixing frame (8) comprises a U-shaped main plate (81) and a reinforcing rib (82) fixedly arranged in the middle of the outer wall of the main plate (81), and the reinforcing rib (82) makes the two ends of the top of the fixing frame (8) both have a T-shaped structure; and the front shaft sleeve (13) and the rear shaft sleeve (14) are fixedly connected with the two T-shaped structures respectively.

8. The tooling apparatus for sleeve cutting as claimed in claim 7, wherein, The two ends of the top of the main plate (81) are both provided with an upwardly-opened arc-shaped mounting groove.

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