CN207807217U - A kind of axially position device for turning shaft-like workpiece - Google Patents

Abstract

The utility model discloses a kind of axially position devices for turning shaft-like workpiece, including extension bar, T-type connecting rod, positioning pulley, shaft, axis pin and rivet.Described extension bar one end is equipped with locating journal, and the other end is equipped with open slot in an axial direction, and is radially equipped with the first pin hole and the second pin hole at open slot end.The T-type connecting rod is the T-shaped structure plate that vertical plate and level board form, and the centre of level board is equipped with third pin hole, and the left end of level board, which is equipped with, wears axis hole, and the right end of level board is equipped with the second card slot, and the upper end of vertical plate is equipped with the first card slot.The level board of T-type connecting rod turns left to horizontality, i.e. T-type connecting rod is in positioning states；The level board of T-type connecting rod turns right to vertical state, i.e. T-type connecting rod is in collapsed state.The utility model realizes that shaft-like workpiece front end efficiently positions, and workpiece axial direction dimension precision requirement is effectively ensured, reduces the clamping times and procedure of processing of shaft-like workpiece, improves processing efficiency.

Description

An Axial Locator for Turning Shaft Workpieces

technical field

The utility model belongs to the technical field of clamping tooling for turning, in particular it relates to an axial positioner for turning shaft workpieces.

Background technique

In our turning process, shaft parts are the most common type of processing. When turning shaft workpieces, especially long parts, the length of the workpiece protruding from the jaws can only be measured by a steel ruler or depth caliper, but it is subject to the axial movement of the workpiece during the jaw clamping process, resulting in machining The protruding length of the part cannot be precisely controlled, that is, the precise positioning of the front end cannot be achieved. Or lock the tailstock, shake the tailstock handle back and forth to perform repeated positioning by observing the scale, which is not only time-consuming and laborious, but also easy to shake the wrong scale. Therefore, the usual practice is to leave a margin for the length dimension of the shaft parts, and then process the length dimension to meet the technical requirements after the other dimensions of the parts are processed. The disadvantages of the above process method are: (1) the process flow is long; (2) the end face of the part needs to be processed multiple times; (3) due to the total length of the final processed part, it is necessary to take into account the correlation of other dimensions in the length direction, which makes measurement difficult and easy. The size is out of tolerance; (4) The processed surface needs to be clamped multiple times, which is easy to cause surface scratches and surface quality problems have occurred. The above first two shortcomings reduce the processing efficiency, and the latter two shortcomings make quality problems prone to occur in the processing process.

Utility model content

Aiming at the technical conditions and existing shortcomings of the axial positioning of turning shaft workpieces, the utility model provides an axial positioner for turning shaft workpieces.

The purpose of the utility model content is achieved by the following technical solutions:

An axial positioner for turning shaft workpieces, comprising a connecting rod 1, a T-shaped connecting rod 2, a positioning pulley 3, a rotating shaft 4, a pin shaft 5 and a rivet 6. The connecting rod 1 is a cylindrical rod, one end is provided with a positioning journal 14, and the other end is provided with an open slot 11 along the axial direction, and a first pin hole 12 and a second pin hole are provided radially at the end of the open slot 11 13 , the first pin hole 12 and the second pin hole 13 respectively pass through the opening slot 11 and are perpendicular to the opening slot 11 .

The T-shaped connecting rod 2 is a T-shaped structural plate composed of a vertical plate and a horizontal plate. The vertical plate is vertically connected to the middle position of the horizontal plate. The third pin hole 21 is provided in the middle of the horizontal plate, and the left end of the horizontal plate is provided with There is a shaft hole 22, the right end of the horizontal plate is provided with a second draw-in groove 24, and the opening direction of the second draw-in groove 24 is upward, and the upper end of the vertical plate is provided with a first draw-in groove 23, and the opening of the first draw-in groove 23 direction to the right.

During assembly, the T-shaped connecting rod 2 is inserted into the opening groove 11, the T-shaped connecting rod 2 is connected to the connecting rod 1 through the third pin hole 21 and the first pin hole 12 by the rotating shaft 4, and the positioning pulley is positioned by the pin shaft 5. 3 is connected to the shaft hole 22, and the rivet 6 is riveted in the second pin hole 13.

When in use, the positioning journal 14 is clamped in the tailstock joint, the first circular shaft workpiece is clamped in the three-jaw chuck of the lathe, and the clamping position in the length direction of the first circular shaft workpiece is measured and determined with a depth vernier caliper Finally, lock the three-jaw chuck and clamp the round shaft workpiece, turn the horizontal plate of the T-shaped connecting rod 2 to the left to the horizontal state, move the tailstock of the lathe so that the positioning pulley 3 touches the right end face of the round shaft workpiece, and lock Tighten the tailstock of the lathe, turn the horizontal plate of the T-shaped connecting rod 2 to the right to a vertical state, and start the lathe to cut the first round shaft workpiece. Subsequent processing of the same round shaft workpiece as the first piece, turn the horizontal plate of the T-shaped connecting rod 2 to the left to the horizontal state, put the right end face of the round shaft workpiece against the positioning pulley 3, lock the three-jaw chuck and clamp it For the circular shaft workpiece, turn the horizontal plate of the T-shaped connecting rod 2 to the right to the vertical state, start the lathe to cut the circular shaft workpiece, and cycle accordingly to increase the clamping speed of the circular shaft workpiece.

Further defined technical aspects are as follows:

The center distance between the third pin hole 21 and the second locking slot 24 is equal to the center distance between the third pin hole 21 and the first locking slot 23 , and equal to the center distance between the first pin hole 12 and the second pin hole 13 .

The bottoms of the first locking groove 23 and the second locking groove 24 are both semicircular arc surfaces, and the first locking groove 23 and the second locking groove 24 are in clearance fit with the outer circle of the rivet 6 .

The third pin hole 21 is a clearance fit with the rotating shaft 4 , and the rotating shaft 4 is an interference fit with the first pin hole 12 .

The positioning pulley 3 is provided with a pin shaft hole 31, and the pin shaft hole 31 and the pin shaft 5 are clearance fit. The bearing pin 5 is an interference fit with the shaft passing hole 22 .

A chamfer 32 is provided on the outer circle of the positioning pulley 3 , and one side of the chamfer 32 faces the direction of the tool rest of the lathe during installation.

One end of the pin shaft 5 is provided with a hemispherical cap, and the hemispherical cap restricts the axial displacement of the positioning pulley 3 .

When processing a new round-shaft workpiece, the length of the new round-shaft workpiece is different from that of the first round-shaft workpiece, and it is processed in batches, only the distance between the tailstock of the lathe and the three-jaw chuck needs to be adjusted.

The beneficial technical effect of the utility model is:

(1) The T-shaped connecting rod structure is adopted to realize the axial positioning of the turning shaft workpiece, which is safe and reliable.

(2) Realize the high-efficiency positioning of the front end of the shaft workpiece, and effectively ensure the accuracy requirements of the axial dimension of the workpiece.

(3) The number of clamping times and processing steps are reduced, and the processing efficiency is improved.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a longitudinal sectional view of the connecting rod of the present utility model.

Fig. 3 is a schematic diagram of the structure of the T-shaped connecting rod of the present invention.

Fig. 4 is a structural schematic diagram of the positioning pulley of the present invention.

Fig. 5 is a schematic diagram of the usage state of the utility model (the T-shaped connecting rod is in the positioning state).

Figure 6 is a schematic view of the utility model in use (the T-shaped connecting rod is in a retracted state).

Serial number in the above picture: connecting rod 1, opening slot 11, first pin hole 12, second pin hole 13, positioning journal 14, T-shaped connecting rod 2, third pin hole 21, shaft penetration hole 22, first card Slot 23, second card slot 24, positioning pulley 3, pin hole 31, chamfer 32, rotating shaft 4, pin shaft 5, rivet 6, round shaft workpiece 7, three-jaw chuck 8, tailstock joint 9, turning tool 10.

Specific implementation method

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment one

Referring to FIGS. 1 to 4 , an axial positioner for turning shaft workpieces includes a connecting rod 1 , a T-shaped connecting rod 2 , a positioning pulley 3 , a rotating shaft 4 , a pin shaft 5 and a rivet 6 .

The connecting rod 1 is a cylindrical rod, one end is provided with a positioning journal 14, and the other end is provided with an open slot 11 along the axial direction, and a first pin hole 12 and a second pin hole are provided radially at the end of the open slot 11 13 , the first pin hole 12 and the second pin hole 13 respectively pass through the opening slot 11 and are perpendicular to the opening slot 11 .

The T-shaped connecting rod 2 is a T-shaped structural plate composed of a vertical plate and a horizontal plate. The vertical plate is vertically connected to the middle position of the horizontal plate. The third pin hole 21 is provided in the middle of the horizontal plate, and the left end of the horizontal plate is provided with There is a shaft hole 22, the right end of the horizontal plate is provided with a second draw-in groove 24, and the opening direction of the second draw-in groove 24 is upward, and the upper end of the vertical plate is provided with a first draw-in groove 23, and the opening of the first draw-in groove 23 direction to the right.

The positioning pulley 3 is provided with a pin shaft hole 31, and the pin shaft hole 31 and the pin shaft 5 are clearance fit. The bearing pin 5 is an interference fit with the shaft passing hole 22 . A chamfer 32 is provided on the outer circle of the positioning pulley 3, and the chamfering 32 reduces the contact area between the positioning pulley 3 and the end surface of the circular shaft workpiece 7, thereby improving the positioning accuracy.

During assembly, the T-shaped connecting rod 2 is inserted into the opening groove 11, the T-shaped connecting rod 2 is connected to the connecting rod 1 through the third pin hole 21 and the first pin hole 12 by the rotating shaft 4, and the positioning pulley is positioned by the pin shaft 5. 3 is connected to the shaft hole 22, and one side of the chamfer 32 faces the direction of the lathe tool post. The rivet 6 is riveted in the second pin hole 13 .

Referring to Fig. 5, when in use, the positioning journal 14 is clamped in the tailstock joint 9, and the first piece of round shaft workpiece 7 is clamped in the three-jaw chuck 8 of the lathe, and the depth vernier caliper is used to measure and determine the circle of the first piece. After the clamping position in the length direction of the shaft workpiece, lock the three-jaw chuck 8 and clamp the round shaft workpiece 7, turn the horizontal plate of the T-shaped connecting rod 2 to the left to the horizontal state, that is, the T-shaped connecting rod 2 is in the positioning state, move the tailstock of the lathe so that the positioning pulley 3 is against the right end face of the round shaft workpiece, and lock the tailstock of the lathe.

Referring to FIG. 6 , turn the horizontal plate of the T-shaped connecting rod 2 to the right to the vertical state, that is, the T-shaped connecting rod 2 is in the retracted state, and start the lathe to cut the first circular shaft workpiece 7 . Subsequent processing of the same round shaft workpiece 7 as the first piece, turn the horizontal plate of the T-shaped connecting rod 2 to the left to the horizontal state, put the right end face of the round shaft workpiece 7 against the positioning pulley 3, and lock the three-jaw chuck 8 And clamp the round shaft workpiece 7, turn the horizontal plate of the T-shaped connecting rod 2 to the vertical state to the right, start the lathe, the turning tool 10 cuts the round shaft workpiece 7, and cycle accordingly to improve the clamping of the round shaft workpiece 7 speed.

When processing a new round-shaft workpiece, the length and dimension of the new round-shaft workpiece are different from the first round-shaft workpiece, and when processing in batches, only the distance between the tailstock of the lathe and the three-jaw chuck needs to be adjusted, and the rest The steps are the same as above.

The above content is not intended to limit any form to the structure and shape of the present utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims (7)

1. An axial locator for turning shaft workpieces, characterized in that: it comprises an adapter rod (1), a T-shaped connecting rod (2), a positioning pulley (3), a rotating shaft (4), a pin shaft (5 ) and rivets (6); the connecting rod (1) is a cylindrical rod, one end is provided with a positioning journal (14), and the other end is provided with an open slot (11) along the axial direction, and at the end of the open slot (11) A first pin hole (12) and a second pin hole (13) are provided in the radial direction, and the first pin hole (12) and the second pin hole (13) respectively pass through the open slot (11), and are connected with the open slot (11) perpendicular to each other; The T-shaped connecting rod (2) is a T-shaped structural plate composed of a vertical plate and a horizontal plate, the vertical plate is vertically connected to the middle position of the horizontal plate, a third pin hole (21) is provided in the middle of the horizontal plate, and the horizontal plate The left end of the plate is provided with a shaft passing hole (22), the right end of the horizontal plate is provided with a second card slot (24), and the opening direction of the second card slot (24) is upward, and the upper end of the vertical plate is provided with a first card slot (23), and the opening direction of the first card slot (23) is to the right; When assembling, the T-shaped connecting rod (2) is inserted into the open slot (11), and the T-shaped connecting rod (2) is connected to the On the connecting rod (1), use the pin shaft (5) to connect the positioning pulley (3) to the shaft hole (22), and the rivet (6) is riveted in the second pin hole (13); When in use, the positioning journal (14) is clamped in the tailstock joint, the first circular shaft workpiece is clamped in the three-jaw chuck of the lathe, and the clamping position in the length direction of the first circular shaft workpiece is measured and determined with a depth vernier caliper. After holding the position, lock the three-jaw chuck and clamp the workpiece on the round shaft, turn the horizontal plate of the T-shaped connecting rod (2) to the left to the horizontal state, and move the tailstock of the lathe so that the positioning pulley (3) touches the round shaft On the right end face of the workpiece, lock the tailstock of the lathe, turn the horizontal plate of the T-shaped connecting rod (2) to the right to a vertical state, and start the lathe to cut the first round shaft workpiece; subsequent processing is the same as the first round shaft workpiece , turn the horizontal plate of the T-shaped connecting rod (2) to the left to the horizontal state, put the right end face of the round shaft workpiece against the positioning pulley (3), lock the three-jaw chuck and clamp the round shaft workpiece, put the T The horizontal plate of type connecting rod (2) rotates to the vertical state to the right, starts the lathe cutting circular shaft workpiece, circulates according to this, improves the clamping speed of circular shaft workpiece. 2. An axial positioner for turning shaft workpieces according to claim 1, characterized in that: the center distance between the third pin hole (21) and the second locking groove (24) is equal to the third The center distance between the pin hole (21) and the first locking groove (23) is equal to the center distance between the first pin hole (12) and the second pin hole (13). 3. An axial positioner for turning shaft workpieces according to claim 1, characterized in that: the bottoms of the first groove (23) and the second groove (24) are both The semicircular arc surface, and the first clamping groove (23) and the second clamping groove (24) are in clearance fit with the outer circle of the rivet (6). 4. An axial positioner for turning shaft workpieces according to claim 1, characterized in that: the third pin hole (21) and the rotating shaft (4) are clearance fit, and the rotating shaft (4) and The first pin hole (12) is an interference fit. 5. An axial positioner for turning shaft workpieces according to claim 1, characterized in that: the positioning pulley (3) is provided with a pin hole (31), and the pin hole (31) It is a clearance fit with the pin shaft (5); the pin shaft (5) and the shaft passing hole (22) are an interference fit. 6. An axial positioner for turning shaft workpieces according to claim 1, characterized in that: the outer circle of the positioning pulley (3) is provided with chamfers (32), and the chamfers (32) are provided during installation. Angle (32) one side is towards the lathe tool rest direction. 7. An axial positioner for turning shaft workpieces according to claim 1, characterized in that: one end of the pin shaft (5) is provided with a hemispherical cap, and the hemispherical cap restricts the positioning pulley (3 ) axial displacement.