TWM547444U - Improved structure of indexing plate - Google Patents

Description

Indexing disc brake structure

This creation department is related to the indexing plate, especially an indexing plate brake structure that can increase the braking force.

Pressing, the indexing plate is one of the main components of the machine tool, which is used to clamp the workpiece to the workpiece and enable the workpiece to be rotated, indexed and positioned to perform indexing drilling, milling, etc. on the machine tool. Processing operations.

However, when the turntable of the conventional indexing disk is rotated to a predetermined angle, the turntable must stop rotating for the tool to machine the workpiece. Therefore, the indexing plate is usually provided with a brake device to effectively lock the spindle to the stop position. To avoid the micro-motion of the turntable caused by the cutting force of the tool, affecting the machining accuracy. The current brakes use the point contact to brake, but also use the surface contact to brake, but the braking effect of the two is still not a real risk. In addition, the current indexing plate does not have the self-locking protection ability, so once lost When the power is on, even if the braking effect is invalid, there is a risk of the tool colliding with the main shaft. In severe cases, the spindle accuracy is affected or the spindle needs to be replaced.

In order to solve the above problems, the present invention discloses an indexing disc brake structure that uses a slanting inclined top pushing rolling member to move on a guiding plane to increase the force on the brake member and enable the main shaft to achieve effective braking.

In order to achieve the above object, the present invention provides an indexing disc brake structure, comprising: a base; a spindle, which is rotatably disposed on the base; a fixing member fixed to the base, the fixing member having a parallel main shaft a guiding plane of the axis; and a brake structure comprising a pushing member, a rolling member and a braking member, the braking member is coupled to the main shaft, and the pushing member is slidably disposed on the base in a direction parallel to the axis of the main shaft, and the pushing member has A slanting ramp corresponds to the guiding plane, and the rolling member is pushed against the slanting surface to be movable along the guiding plane to press the brake toward the brake member.

Wherein, there is an elastic body between the fixing member and the pushing member, and the elastic system normally pushes the pushing member toward the brake member.

Among them, the elastic body is a spring.

Wherein, the fixing member has a sliding slot, and the pushing member is slidably disposed on the sliding slot.

Wherein, the pushing member is provided with a receiving groove at one end of the inclined inclined surface for inserting one end of the elastic body, and the other end of the elastic body abuts against the fixing member.

Wherein, a brake block is further disposed between the rolling member and the brake member, and is pushed by the rolling member to push the brake block to the brake member in a surface contact manner.

Among them, the rolling elements are steel balls.

Wherein, the pushing member is provided with a first limiting portion, and the braking block has a second limiting portion, and the first limiting portion and the second limiting portion can form a stop to limit the displacement amount of the brake block.

Wherein, the sloping slope is inclined by 30 degrees with respect to the guiding plane.

Among them, the pusher is controlled by a solenoid valve.

Thereby, the pushing member moves on the guiding plane by pushing the inclined top pushing rolling member, so that the rolling member acts on the braking member to enhance the force, and the guiding plane provides the smooth guiding of the rolling member, so that the main shaft achieves effective braking.

In addition, by pushing the pushing member toward the brake member by the elastic normal state, when the driving force of the pushing member disappears (blackout), the elastic body still has sufficient force to apply the pushing member to the rolling member and act on the brake. To maintain the self-locking state and avoid the risk of collision between the machining tool and the spindle.

10‧‧‧ Pedestal

20‧‧‧ Spindle

21‧‧‧Dividing turntable

30‧‧‧Fixed parts

31‧‧‧ Guide plane

32‧‧‧Chute

40‧‧‧ brake structure

41‧‧‧Pushing pieces

411‧‧‧Climbing ramp

412‧‧‧ 容容

413‧‧‧First Limitation Department

42‧‧‧Rolling parts

43‧‧‧ brakes

441‧‧‧Second Limitation

44‧‧‧ brake block

50‧‧‧ Elastomers

[Fig. 1] is a schematic view of the stereoscopic appearance of the creation.

[Fig. 2] is a partial cross-sectional view of the creation.

[Fig. 3] is an enlarged schematic view of Fig. 2 showing the main shaft in a braking state.

[Fig. 4] is a cross-sectional view of the creation, showing the spindle in a non-brake state.

For the convenience of the description, the central idea expressed in the above-mentioned creation content column is expressed by a specific embodiment. The various items in the embodiments are set forth in proportion to the description and not in the

Referring to FIGS. 1 to 4 , the present invention is an indexing disc brake structure including a base 10 , a main shaft 20 , a fixing member 30 , and a brake structure 40 .

The main shaft 20 is rotatably disposed on the base 10, and the main shaft 20 is exposed at the front end of the base 10 to fix an indexing turntable 21. The main shaft 20 is capable of driving the worm gear through the motor to cause the main shaft 20 and the indexing table 21 to rotate.

The fixing member 30 is fixed to the base 10. The fixing member 30 is located between the indexing turntable 21 and the base 10, and the fixing member 30 has a guiding plane 31 parallel to the axis of the main shaft 20. The fixing member 30 further has a sliding slot 32 inside the guiding plane 31. .

The brake structure 40 includes a pushing member 41, a rolling member 42, and a brake member 43. The pusher 41 is slidably disposed on the chute 32, and the brake member 43 is in the shape of a disc. The brake member 43 is coupled to the main shaft 20 opposite to the direction in which the index dial 21 is disposed. In the present embodiment, the shifting member 41 is controlled by a solenoid valve. And sliding in the axial direction of the parallel main shaft 20 in the sliding groove 32 of the base 10. The pushing member 41 has a slanting surface 411 corresponding to the guiding plane 31, and further, the slanting slanting surface 411 is disposed at an angle of 30 degrees with respect to the guiding plane 31. The rolling member 42 is disposed between the fixing member 30 and the base 10, and the rolling member 42 is pushed against the inclined plane 411 to be movable along the guiding plane 31 to press the brake toward the brake member 43.

An elastic body 50 is disposed between the fixing member 30 and the pushing member 41. The elastic body 50 is a spring which normally pushes the pushing member 41 toward the brake member 43. In the present embodiment, the inner end of the pushing member 41 is different from the inner end of the sliding inclined surface 411, and a cavity 412 is provided for the elastic body 50 to be inserted into one end, and the other end of the elastic body 50 abuts against the inner wall of the fixing member 30.

The brake structure 40 further includes a brake block 44 that is slidably disposed between the rolling member 42 and the brake member 43 and pushed by the rolling member 42 to urge the brake block 44 to the brake member 43 in a surface contact manner. The shifting member 41 is provided with a first limiting portion 413, and the braking block 44 has a second limiting portion 441. The first limiting portion 413 and the second limiting portion 441 can form a stop to limit the displacement of the brake block 44. Quantity, and In the braking state, the brake block 44 is displaceable in the direction of the fixed member 30 with the pushing member 41, causing the brake block 44 to move away from the brake member 43.

As shown in Figure 3, this is the brake state of the creation. When the pushing member 41 is slipped relative to the base 10, the slanting surface 411 of the pushing member 41 can push the rolling member 42 to move the rolling member 42 along the guiding plane 31, and the rolling member 42 abuts against the brake block 44. So that the brake block 44 is in surface contact and pressed against the brake member 43 to reach the brake of the main shaft 20. Since the slanting slope 411 is disposed at an angle of 30 degrees with respect to the guiding plane 31, the axial force component of the pushing member 41 acting on the rolling member 42 and parallel to the axis of the main shaft 20 is made larger, so that the rolling member 42 passes through the brake block 44. The pressing force on the brake member 43 has a force-increasing effect, and the guiding plane 31 provides a smooth guiding of the rolling member 42 and enables the rolling member 42 to effectively transmit the force to the braking member 43 to effectively achieve the braking effect of the spindle 20, and The fact that the brake block 44 is in surface contact with the brake member 43 brings about a braking effect.

It is worth mentioning that the elastic body 50 pushes the pushing member 41 toward the brake member 43 in a normal state. Even when the driving force of the pushing member 41 disappears (blackout), the elastic body 50 has sufficient force to make the pushing member. The force is applied to the rolling member 42 and acts on the brake member 43 to maintain the self-locking state, avoiding the risk of the machining tool colliding with the spindle 20.

As shown in Figure 4, this is a non-brake state. When the pushing member 41 is driven and displaced in the direction of the fixing member 30, the pushing member 41 overcomes the elastic body 50, so that the pushing slope 411 is no longer applied to the rolling member 42, that is, the rolling member 42 and the brake block 44 are not applied against each other. The brake member 43 is pressed by the second limiting portion 441 of the brake block 44 and the first limiting portion 413 of the pushing member 41 to enable the brake block 44 to move toward the fixing member 30 along with the pushing member 41. Displacement in the direction causes the brake block 44 to leave the brake member 43 without contact, so that the spindle 20 is in a non-brake state.

Thereby, the creative rolling member 42 acts on the brake member 43 to enhance the force, and the guiding plane 31 provides the smooth guiding of the rolling member 42 to achieve the effective braking of the main shaft 20.

Although the present invention has been described in terms of a preferred embodiment, it is obvious to those skilled in the art that various changes can be made without departing from the spirit and scope of the invention. The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Any modification or change that is not in violation of the spirit of this creation is the scope of patent application for this creation.

10‧‧‧ Pedestal

20‧‧‧ Spindle

21‧‧‧Dividing turntable

30‧‧‧Fixed parts

31‧‧‧ Guide plane

32‧‧‧Chute

40‧‧‧ brake structure

41‧‧‧Pushing pieces

411‧‧‧Climbing ramp

412‧‧‧ 容容

413‧‧‧First Limitation Department

42‧‧‧Rolling parts

43‧‧‧ brakes

44‧‧‧ brake block

441‧‧‧Second Limitation

50‧‧‧ Elastomers

Claims (10)

An indexing disc brake structure, comprising: a base; a main shaft rotated and disposed on the base; a fixing member fixed to the base, the fixing member having a guide parallel to the axis of the main shaft And a brake structure comprising a pushing member, a rolling member and a brake member, the brake member being coupled to the main shaft, the sliding member being slidably disposed on the base parallel to the axial direction of the main shaft, the shifting The piece has a sloping surface corresponding to the guiding plane, and the rolling member is pushed against the guiding plane to be movable along the guiding plane to press the brake toward the brake member. The indexing disc brake structure of claim 1, wherein the fixing member and the pushing member have an elastic body, and the elastic system normally pushes the pushing member toward the braking member. The indexing disc brake structure of claim 2, wherein the elastic body is a spring. The indexing disc brake structure of claim 3, wherein the fixing member has a sliding slot, and the pushing member is slidably disposed on the sliding slot. The indexing disc brake structure of claim 4, wherein the pushing member is provided with a receiving groove at one end of the inclined inclined surface for the one end of the elastic body to be inserted, and the other end of the elastic body abuts against the fixing member . The indexing disc brake structure of claim 1, further comprising a brake block disposed between the rolling member and the brake member, and being pushed by the rolling member to push the brake block in a surface contact manner Pressed on the brake. The indexing disc brake structure of claim 1 or 6, wherein the rolling member is a steel ball. The indexing disc brake structure of claim 6, wherein the pushing member is provided with a first limiting portion, the brake block has a second limiting portion, the first limiting portion and the second limiting portion A stop can be formed to limit the amount of displacement of the brake block. The indexing disc brake structure of claim 1, wherein the slanting ramp is inclined by 30 degrees with respect to the guiding plane. The indexing disc brake structure of claim 1, wherein the shifting member controls displacement by a solenoid valve.