CN115229530A - Tool for milling key groove - Google Patents

Abstract

The invention provides a tool for milling a keyway, which relates to the technical field of tooling and fixtures, and comprises a support base plate, a support seat and a clamping assembly; the support base is provided with two, and the two support seats are respectively arranged at both ends of the support base plate, The two opposite sides of the two support bases are horizontally fixed with placing plates; two clamping assemblies are provided, and the two clamping assemblies are respectively arranged on the two supporting bases, and the clamping assemblies include two The splint, the two splints are respectively arranged above the two ends of the placing plate, the splint is horizontally slidably connected to the support seat, and the sliding directions of the two splints are opposite; the support base plate is also provided with a pressing component for compressing the middle of the crankshaft, The pressing assembly is arranged between the two support seats. It solves the problem in the prior art that the output shaft is easily rotated during the keyway milling process, resulting in low production efficiency.

Description

A tool for milling keyway

technical field

The invention relates to the technical field of tooling and fixtures, in particular to a tooling for milling key grooves.

Background technique

The keyway is a groove that matches the key on the shaft or in the hole, which is used to install the key to transmit torque. The crankshaft is the most important part in the engine. It bears the force from the connecting rod and converts it into torque through the crankshaft to drive other accessories on the engine to work. During the keyway milling process of the crankshaft, the clamping requirements of the crankshaft are required. Very high, when the clamping force of the fixture on the crankshaft is not strong enough, the crankshaft is easy to rotate during the milling of the keyway, and the rotation of the crankshaft makes the machining accuracy low and the production efficiency low.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the present invention provides a tool for milling a keyway, which solves the problem in the prior art that the output shaft easily rotates during the keyway milling process, resulting in low production efficiency.

To achieve the above object, the present invention has adopted the following technical solutions:

A tool for milling keyway, comprising a support base plate, a support seat and a clamping component;

There are two support bases, the two support bases are respectively arranged at both ends of the support base plate, and the two support bases are horizontally fixed with placing plates on the opposite sides;

The clamping assembly is provided with two, and the two clamping assemblies are respectively arranged on the two support bases. The clamping assembly includes two clamping plates, which are respectively arranged above the two ends of the placing plate, and the clamping plates are horizontally slidably connected. On the support base and the sliding directions of the two splints are opposite;

The support base plate is also provided with a pressing component for pressing the middle of the crankshaft, and the pressing component is arranged between the two support seats.

Compared with the prior art, the present invention has the following beneficial effects:

A placing plate is arranged to place the crankshaft; the clamping plates of the two clamping assemblies can slide to clamp both ends of the crankshaft respectively; It is more stable, avoiding the rotation of the crankshaft in the process of milling the keyway, and improving the production efficiency.

Preferably, a connecting plate is fixed on the side away from the two splints, a rotating rod is horizontally arranged in the support base, the rotating rod is connected to the support base along its own axis in rotation, and the axis of the rotating rod is connected to the splint. The two ends of the rotating rod protrude out of the support seat, the two connecting plates are respectively connected with the two ends of the rotating rod, and the two ends of the rotating rod have opposite screw threads.

Preferably, a cavity is provided in the support base, the middle part of the rotating rod passes through the cavity, a first drive motor is fixed on the support base plate, and the output shaft of the first drive motor is fixed coaxially. A first transmission rod is connected, one end of the first transmission rod is rotatably connected in the support seat through the cavity, and the first transmission rod and the rotation rod are in transmission connection.

Preferably, the pressing assembly includes a base and a pressure plate, the base is arranged on the support bottom plate and is located between the two support bases, the pressure plate is elastically connected above the base in a vertical direction, and the base is also There is a fixing structure for fixing the pressing plate.

Preferably, an outer rod is vertically fixed on the base, an inner rod is vertically slidably connected to the outer rod, the upper end of the inner rod is fixedly connected with the pressing plate, and a first spring is sleeved on the inner rod, so The two ends of the first spring are respectively fixed with the upper end of the outer rod and the bottom end of the pressing plate, the fixing structure includes a screw rod and a nut, and one end of the screw rod is vertically fixed on the base with one end of the outer rod, The pressing plate is provided with a hole for the screw rod to pass through, and the nut is screwed on the upper end of the screw rod to limit the upward movement of the pressing plate.

Preferably, the base and one of the support bases are both slidably connected to the support base plate along the direction of moving toward the other support base.

Preferably, a chute is provided on the support base plate between the two support bases, the base and one of the support bases are both horizontally slidably connected in the chute, and the bottom of one side of the base is connected to the chute horizontally. There is a fixed plate that can be fixed with the support bottom plate, a vertical plate is arranged on the support bottom plate, a pneumatic cylinder is arranged on the vertical plate, and the output end of the pneumatic cylinder is coaxially fixed with a second transmission rod. The second transmission rod is fixedly connected with one of the support bases.

Preferably, the bottom of the chute is provided with a material receiving cavity, the material receiving cavity is provided with a material receiving box, the side wall of the material receiving cavity is provided with an opening, and one side of the material receiving box is provided with a fixing block extending out of the opening, A positioning plate is arranged on the side wall of the supporting bottom plate, a limiting groove is arranged on the fixing block, a vertical rod is vertically penetrated on the positioning plate, and a thread is provided on the limiting plate for threaded connection with the vertical rod. A through hole, the lower end of the vertical rod can extend into the limiting slot to limit the movement of the receiving box.

Other advantages, objects, and features of the present invention will appear in part from the description that follows, and in part will be appreciated by those skilled in the art from the study and practice of the invention.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of one of the support bases according to the embodiment of the present invention.

3 is a schematic cross-sectional view of one of the bases according to the embodiment of the present invention.

FIG. 4 is a schematic partial cross-sectional view of the overall structure of the embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a side view of the connection between the material receiving box and the supporting bottom plate according to the embodiment of the present invention.

FIG. 6 is an enlarged schematic diagram of part A of FIG. 5 .

FIG. 7 is a schematic top view of the structure of the receiving box according to the embodiment of the present invention.

FIG. 8 is a partial cross-sectional schematic diagram of the connection structure between the clamping assembly and the supporting bottom plate according to an embodiment of the present invention.

FIG. 9 is a schematic structural diagram of a support seat according to another embodiment of the present invention.

FIG. 10 is a schematic structural diagram of a clamping assembly according to another embodiment of the present invention.

In the above drawings: 1. Supporting bottom plate; 11. First driving motor; 111. First transmission rod; 12. Material receiving cavity; 13. Vertical plate; 14. Pneumatic cylinder; Seat; 21, cavity; 3, placing plate; 41, splint; 42, connecting plate; 43, rotating rod; 51, base; 512, fixing plate; 52, pressing plate; 531, outer rod; 532, inner rod; 54 , the first spring; 61, the screw; 62, the nut; 7, the receiving box; 81, the fixed block; 811, the limit groove; 82, the positioning plate; 83, the vertical rod.

Detailed ways

In order to make the technical means realized by the present invention, the creation features, the achievement of the purpose and the function more clear and easy to understand, the technical solutions in the present invention are further described below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1 to FIG. 10 , an embodiment of the present invention proposes a tool for milling a keyway, including a support base 1 , a support seat 2 and a clamping assembly; two support seats 2 are provided, and two support seats 2 are provided. They are respectively arranged on both ends of the support base plate 1, and the two opposite sides of the two support bases 2 are horizontally fixed with the placing plates 3; the clamping components are provided with two, and the two clamping components are respectively arranged in two On the support base 2, the clamping assembly includes two clamp plates 41, the two clamp plates 41 are respectively arranged above the two ends of the placing plate 3, the clamp plates 41 are horizontally slidably connected to the support base 2 and the sliding directions of the two clamp plates 41 are opposite; The support base plate 1 is also provided with a pressing component for pressing the middle of the crankshaft, and the pressing component is arranged between the two support seats 2 .

There are fixing strips on both sides of the supporting base plate 1, and the supporting base plate 1 can be fixed on a workbench with threaded holes threaded with the fixing bolts by arranging fixing bolts on the fixing strips. When fixing the crankshaft, The two ends of the crankshaft are placed on the two placing plates 3 on the support base 2 respectively, and then the two clamping plates 41 are controlled to be clamped in the direction of the crankshaft. The side of the splint 41 in contact with the crankshaft is arranged in an arc shape that fits with the surface of the end of the crankshaft, and the curved surface is provided with a rubber pad, which can adapt to changes in the diameter of the crankshaft and better wrap it as the diameter of the crankshaft changes. A placing plate 3 is arranged to place the crankshaft; the clamping plates 41 of the two clamping assemblies can slide to clamp both ends of the crankshaft respectively; and a pressing assembly is arranged between the two clamping assemblies, so that the crankshaft can be The keyway makes it more stable, prevents the crankshaft from rotating during the keyway milling process, and improves production efficiency.

As shown in FIG. 1 to FIG. 3 , a connecting plate 42 is fixedly connected to the side facing away from the two clamping plates 41 , and a rotating rod 43 is horizontally provided in the supporting base 2 , and the rotating rod 43 is rotatably connected along its own axis. On the support base 2 , the axis of the rotating rod 43 is parallel to the sliding direction of the clamping plate 41 , the two ends of the rotating rod 43 protrude out of the support base 2 , and the two connecting plates 42 are respectively threaded with the two ends of the rotating rod 43 . For connection, the threads at both ends of the rotating rod 43 have opposite directions of rotation. Since the clamping plate 41 is slidably connected to the support base 2, during the rotation of the rotating rod 43, the two connecting plates 42 can drive the clamping plate 41 to slide and control the rotation of the rotating rod 43, so that the two connecting plates 42 move in opposite directions to The two connecting plates 42 drive the clamping plate 41 to clamp or loosen the end of the crankshaft.

As shown in FIG. 3 , the support base 2 is provided with a cavity 21 , the middle of the rotating rod 43 passes through the cavity 21 , the support base plate 1 is fixed with a first drive motor 11 , and the first drive motor 11 is fixed on the support base 1 . The output shaft of a drive motor 11 is coaxially fixed with a first transmission rod 111 , one end of the first transmission rod 111 is rotatably connected to the support base 2 through the cavity 21 , and the first transmission rod 111 It is drivingly connected with the rotating rod 43 . The first transmission rod 111 is driven to rotate by the first driving motor 11, thereby driving the rotation rod 43 to rotate through the transmission connection.

As shown in FIG. 1 and FIG. 8 , the pressing assembly includes a base 51 and a pressing plate 52 , the base 51 is disposed on the support base 1 and is located between the two supporting bases 2 , and the pressing plate 52 is elastic in the vertical direction It is connected above the base 51 , and the base 51 is further provided with a fixing structure for fixing the pressing plate 52 . When placing the crankshaft, since the pressure plate 52 is elastically connected to the base 51, it is convenient to put the crankshaft between the base 51 and the pressure plate 52; a fixed structure is provided, so that the distance between the pressure plate 52 and the base 51 can be controlled, so as to compress the crankshaft.

Further, the specific structure of the pressing assembly is shown in FIG. 8 , an outer rod 531 is vertically fixed on the base 51 , an inner rod 532 is vertically slidably connected to the outer rod 531 , and the upper end of the inner rod 532 is connected to the The pressure plate 52 is fixedly connected, the inner rod 532 is sleeved with a first spring 54, the two ends of the first spring 54 are respectively fixed with the upper end of the outer rod 531 and the bottom end of the pressure plate 52, and the fixing structure includes a screw 61 and a nut 62, one end of the screw 61 is vertically fixed on the base 51 with one end of the outer rod 531, the pressing plate 52 is provided with a hole for the screw 61 to pass through, and the nut 62 is threadedly connected to The upper end of the screw 61 is used to restrict the upward movement of the pressing plate 52 . The distance between the pressing plate 52 and the base 51 is adjusted through the cooperation of the nut 62 and the screw 61 . In the case where the screw 61 is not provided, the elastic force of the first spring 54 causes the inner rod 532 to move upward, and the inner rod 532 lifts the pressure plate 52 upward, so that the distance between the pressure plate 52 and the base 51 is sufficient to facilitate the crankshaft being placed from the side; After the crankshaft, the rotating nut 62 moves down on the screw 61 and pushes the pressing plate 52 to move down, thereby compressing the middle part of the crankshaft.

The base 51 and one of the support bases 2 are both slidably connected to the support base plate 1 along the direction of moving toward the other support base 2 . By adjusting the distance between the support bases 2 and the position of the base 51 , the crankshafts of different lengths can be pressed and key grooves are milled.

Specifically, as shown in FIG. 1 , FIG. 4 and FIG. 8 , the support base plate 1 is provided with a chute between the two support bases 2 , and the base 51 and one of the support bases 2 are both horizontal The bottom of the base 51 is slidably connected in the chute, the bottom of the base 51 is fixed with a base slider, the base slider is slidably connected in the chute, and the bottom of one side of the base 51 is provided with a fixing plate that can be fixed with the support base 1 512, the support base plate 1 is provided with a vertical plate 13, the vertical plate 13 is provided with a pneumatic cylinder 14, the output end of the pneumatic cylinder 14 is coaxially fixed with a second transmission rod 141, and the second transmission rod 141 It is fixedly connected with one of the support bases 2 . As shown in FIG. 8 , a support fixing plate is provided on one side of the supporting bottom plate 1 , and the fixing plate 512 and the supporting fixing plate are connected by bolts. As shown in FIG. 1 and FIG. 4 , the bottom of one of the support bases 2 is fixed to the slide plate, the bottom of the slide plate is fixed to the support slide block, the support slide block is slidably connected in the chute, the slide block support base 2 and the first drive motor 11 Both are arranged on the slide plate, and one of the support bases 2 is pushed by the pneumatic cylinder 14, so that the support slide block drives the slide plate to move, and the length that can support the fixed crankshaft is changed.

As shown in FIG. 4 to FIG. 8 , the bottom of the chute is provided with a material receiving cavity 12 , the material receiving cavity 12 is provided with a material receiving box 7 , the side wall of the material receiving cavity 12 is provided with an opening, and the material receiving box 7 is a There is a fixing block 81 protruding out of the opening on the side, a positioning plate 82 is arranged on the side wall of the supporting bottom plate 1, a limiting groove 811 is arranged on the fixing block 81, and a vertical vertical hole is vertically penetrated on the positioning plate 82. Rod 83 , the positioning plate 82 is provided with a threaded through hole threaded with the vertical rod 83 , and the lower end of the vertical rod 83 can extend into the limiting groove 811 to limit the movement of the material receiving box 7 . A receiving box 7 is set up to receive the debris that falls into the chute after milling the keyway, and the debris will not accumulate at the bottom of the chute, so as to avoid affecting the sliding of the base 51 and the support seat 2; Both ends of the side are provided with fixing blocks 81, and the receiving box 7 extends into the limit groove 811 of the fixing block 81 connected with the receiving box 7 through the vertical rod 83, so as to fix the receiving box 7 and fix the receiving box 7 Rotate the vertical rod 83 to move the vertical rod 83 downward until the lower end of the vertical rod 83 abuts the bottom of the limiting groove 811 to prevent the receiving box 7 from slipping out of the receiving cavity 12 .

Further, as shown in FIG. 9 and FIG. 10 , in order to prevent the crankshaft from falling after the crankshaft is placed, both the placement plate 3 and the base 51 are set as inclined surfaces inclined toward the middle.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (8)

1. A tool for milling keyway, characterized in that: it comprises a support base plate (1), a support seat (2) and a clamping assembly; There are two supporting seats (2), the two supporting seats (2) are respectively arranged on both ends of the supporting bottom plate (1), and the opposite sides of the two supporting seats (2) are horizontally fixed and placed. plate (3); There are two clamping assemblies, and the two clamping assemblies are respectively disposed on the two support bases (2), and the clamping assemblies include two clamping plates (41), which are respectively disposed on the two supporting bases (2). Above both ends of the plate (3), the splint (41) is horizontally slidably connected to the support seat (2) and the sliding directions of the two splints (41) are opposite; The supporting bottom plate (1) is also provided with a pressing component for pressing the middle of the crankshaft, and the pressing component is arranged between the two support seats (2). 2. A tool for milling keyway according to claim 1, characterized in that: a connecting plate (42) is fixedly connected to one side away from the two said splints (41), and the inner level of said support seat (2) is horizontal A rotating rod (43) is provided, the rotating rod (43) is rotatably connected to the support base (2) along its own axis, and the axis of the rotating rod (43) is parallel to the sliding direction of the clamping plate (41). Both ends of (43) protrude out of the support seat (2), and the two connecting plates (42) are respectively connected with two ends of the rotating rod (43) with threads, and the threads at both ends of the rotating rod (43) have opposite directions of rotation. . 3 . The tool for milling keyway according to claim 2 , wherein a cavity ( 21 ) is provided in the support seat ( 2 ), and the middle part of the rotating rod ( 43 ) passes through the cavity. 4 . (21), a first drive motor (11) is fixed on the support base plate (1), and a first transmission rod (111) is fixed coaxially on the output shaft of the first drive motor (11). One end of the first transmission rod (111) is rotatably connected in the support seat (2) through the cavity (21), and the first transmission rod (111) is in transmission connection with the rotation rod (43). 4. A tool for milling keyway according to claim 1, characterized in that: the pressing component comprises a base (51) and a pressing plate (52), and the base (51) is arranged on the support base plate (1) and is located between the two support bases (2), the pressing plate (52) is elastically connected above the base (51) in the vertical direction, and the base (51) is also provided with a fixing plate (52) for fixing structure. 5. The tooling for milling keyway according to claim 1, characterized in that: an outer rod (531) is vertically fixed on the base (51), and an inner rod (531) is vertically slidably connected with an inner rod (531). A rod (532), the upper end of the inner rod (532) is fixedly connected with the pressing plate (52), a first spring (54) is sleeved on the inner rod (532), and two parts of the first spring (54) are sleeved. The ends are respectively fixed with the upper end of the outer rod (531) and the bottom end of the pressing plate (52). The fixing structure includes a screw rod (61) and a nut (62). The base (51) is provided with one end of the outer rod (531), the pressing plate (52) is provided with a hole for the screw rod (61) to pass through, and the nut (62) is threadedly connected to the screw rod (61). The upper end is used to limit the upward movement of the pressing plate (52). 6. A tool for milling keyway according to claim 1, characterized in that: both the base (51) and one of the support seats (2) slide in the direction of moving toward the other support seat (2). connected to the support base plate (1). 7. A tool for milling keyway according to claim 6, characterized in that: a chute is provided on the support base plate (1) between the two support seats (2), and the base (51) ) and one of the support bases (2) are horizontally slidably connected in the chute, and the bottom of one side of the base (51) is provided with a fixing plate (512) that can be fixed with the support base plate (1). , a vertical plate (13) is arranged on the supporting bottom plate (1), a pneumatic cylinder (14) is arranged on the vertical plate (13), and the output end of the pneumatic cylinder (14) is coaxially fixed with a second transmission rod (141), the second transmission rod (141) is fixedly connected to one of the support seats (2). 8. The tooling for milling keyway according to claim 7, characterized in that: the bottom of the chute is provided with a material receiving cavity (12), and a material receiving cavity (12) is provided with a material receiving box (7), The side wall of the material receiving cavity (12) is provided with an opening, one side of the material receiving box (7) is provided with a fixing block (81) extending out of the opening, and a positioning plate (81) is provided on the side wall of the supporting bottom plate (1). 82), the fixing block (81) is provided with a limit slot (811), the positioning plate (82) is vertically penetrated with a vertical rod (83), and the positioning plate (82) is provided with a vertical A threaded through hole to which the rod (83) is threaded, and the lower end of the vertical rod (83) can extend into the limiting groove (811) to limit the movement of the material receiving box (7).

Images