TWM479170U - Chuck with balance adjusting structure - Google Patents

Description

Chuck with balance adjustment structure

This creation relates to a part of a machine tool, in particular to a chuck mounted on a machine tool for holding or fixing a workpiece or a tool.

Conventional machine tools such as lathes, milling machines, drill presses, etc., need to be clamped to fix a workpiece or a tool by a collet; wherein the collet includes a portion and is disposed on the seat and is opposite to the seat The plurality of jaws are displaced, and the seat is driven by a rotary cylinder to rotate the seat relative to the lathe.

It is worth noting that in the increasingly popular environment of machine tools, ensuring the dynamic balance of the chuck of the machine tool during processing is the most basic measure of eligibility. There are many reasons for the imbalance of the chuck and the machine tool during processing. These causes are often random and have no rules. Therefore, in any case, the user must finally try to compensate for this imbalance. Balance the purpose of tuning.

The dynamic balance of the conventional chuck is performed by drilling at any position on the chuck, in particular, drilling the seat of the chuck. By drilling, the weight of the chuck at the borehole is reduced, thereby achieving dynamic balance.

However, it is easy to cause damage to the structure of the chuck during the drilling process, and it is necessary to complete the assembly after drilling to confirm whether the adjustment is completed, so the adjustment is not very good. easy.

In view of this, the creator conceived and further studied, and finally created a chuck with a balanced adjustment structure.

The present invention provides a collet with a balance adjustment structure, the main purpose of which is to allow the user to quickly adjust the dynamic balance of the collet, and to avoid damage to the structure of the collet when adjusting the dynamic balance of the collet.

In order to achieve the foregoing objective, the present invention provides a collet having a balance adjustment structure, comprising: a collet comprising a main shaft having a portion and a rotary cylinder at two ends along a direction of the axis thereof, the collet having At least one annular groove, the annular groove is centered on the axis of the main shaft, and has a circular shape around the axis of the main shaft. The width of the bottom of the annular groove is larger than the width of the opening of the annular groove, so that the cross section of the annular groove is And a plurality of balance blocks, each of which is disposed in the ring groove and has an adjustment fixing member for adjusting whether the balance block is fixed on the ring groove, When the weight is not fixed on the ring groove, the balance block can be displaced relative to the ring groove; to adjust the relative position of each balance block in the ring groove to adjust the chuck to rotate The dynamic balance of time.

The present invention utilizes the provided chuck with a balance adjustment structure, and the effect obtained by the user is that by having at least one ring groove in the chuck and embedding a plurality of balance blocks in the ring groove, the user can change the balance. The relative position of the block in the ring groove to adjust the dynamic balance of the chuck when rotating.

The techniques and means used to achieve the above objectives And other functions, a preferred embodiment is described in detail with reference to the drawings.

[this creation]

20‧‧‧ chuck

21‧‧‧ Spindle

22‧‧‧

221‧‧‧claw

23‧‧‧Rotary cylinder

24‧‧‧ Ring groove

30‧‧‧balance block

31‧‧‧ screw holes

32‧‧‧ openings

33‧‧‧Adjustment fixtures

331‧‧‧ screw

332‧‧‧Blocking bumps

A‧‧‧Axis

Fig. 1 is a perspective exploded view of the present embodiment.

Figure 2 is a side elevational view of the present embodiment.

Fig. 3 is a view showing the appearance of the bottom surface of the rotary cylinder in Fig. 2.

Fig. 4 is a partially enlarged cross-sectional view of Fig. 2;

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please refer to the following [Simplified Description of the Drawings] for details: The preferred implementation of the chuck with balanced adjustment structure For example, as shown in FIG. 1 to FIG. 4, it includes: a chuck 20 and a plurality of weights 30, wherein: the chuck 20 includes a spindle 21, and the spindle 21 is fixed at two ends along the direction of the axis a thereof. Combining a portion 22 and a rotary cylinder 23, the front end surface of the seat portion 22 has a plurality of jaws 221, and the inner portion of the seat portion 22 and the rear end surface is coupled with the main shaft 21, and the rotary cylinder 23 has a front end surface thereof and the main shaft In combination with the 21, the collet 20 has at least one ring groove 24, the ring groove 24 is centered on the axis of the main shaft 21, and is rounded around the axis of the main shaft 21, and the width of the bottom portion of the ring groove 24 is relatively The width of the opening of the annular groove 24 is large, so that the cross section of the annular groove 24 has a dovetail shape. It is noted that in this embodiment, the number of the annular groove 24 is two, and one annular groove 24 is formed in the ring groove 24 The outer edge of the rear end surface of the seat portion 22, the other annular groove 24 is formed on the outer edge of the rear end surface of the rotary cylinder 23; and the plurality of balance weights 30, the width of the bottom portion of each of the balance weights 30 is higher than the top of the balance weight 30 The balance block 30 has a dovetail shape, and each of the balance blocks 30 has a circular arc shape with respect to the annular groove 24 to be embedded in the annular groove 24. The balance block 30 is provided at the center. The screw hole 31 has an opening 32 on the side of the weight 30, and the screw hole 31 is connected to the opening 32. Each of the weight blocks 30 has an adjusting fixture 33. 33 is used to adjust the fixing of each of the weights 30 on the ring groove 24. When the weight 30 is not fixed on the ring groove 24, the weight 30 can be displaced relative to the ring groove 24. In this embodiment, the number of the weights 30 is three, and is accommodated in the ring groove 24, and is equally divided into three. In the ring groove 24, the adjusting member 33 includes a screw member 331 and a blocking protrusion 332. The screw member 331 is screwed to the screw hole 31. The blocking protrusion 332 is received in the opening 32. The radial length of the blocking projection 332 is greater than the radial length of the opening 32, whereby the blocking projection 332 is stably received in the opening 32 without being disengaged from the opening 32.

The center of gravity of the collet 20 is adjusted by changing the relative position of each of the weights 30 in the annular groove 24, thereby adjusting the dynamic balance of the collet 20 during rotation.

The above is the main components of the creative embodiment and its configuration Bright. For the use and function of the present embodiment, please refer to FIG. 3 and FIG. 4 together with FIG. 1 and FIG. 2 , the weight 30 is received in the ring groove 24 of the chuck 20 , and The user can adjust the adjusting member 33 to adjust whether the weight 30 is fixed to the ring groove 24. When the user locks the screw 331 of the adjusting member 33 into the screw hole 31, the block The retaining block 332 protrudes from the opening 32, thereby increasing the width of the weight 30, and at the same time fitting the dovetail structure of the ring groove 24, the weight 30 is fixed in the ring groove 24. When the user wants to adjust the dynamic balance of the collet 20 when rotating, the screw 331 is slightly screwed out of the screw hole 31, so that the blocking protrusion 332 is retracted toward the opening 32. The weight 30 can be freely displaced around the ring groove 24 in the ring groove 24, so that the user can adjust the position of each of the weight blocks 30 to change the center of gravity of the chuck 20, and after the adjustment is completed, The screw member 331 is locked into the screw hole 31 to fix the position of the weight block 30 in the ring groove 24, thereby achieving dynamic balance of the chuck 20 during rotation.

In addition, as shown in FIG. 1 and FIG. 2, the ring groove 24 of the present invention can be formed on the outer edge of the end surface of the seat portion 22 of the collet 20, or can be formed on the outer edge of the end surface of the rotary cylinder 23, Thereby, the user can selectively adjust the weight 30 in one of the ring grooves 24 when the chuck 20 is dynamically balanced according to actual use.

It is known from the above that this creation is indeed in line with "industry availability", "novelty" and "progressiveness". It proposes a new type of patent application according to law, and prays for review and early grant of patents.

20‧‧‧ chuck

21‧‧‧ Spindle

22‧‧‧

221‧‧‧claw

23‧‧‧Rotary cylinder

24‧‧‧ Ring groove

30‧‧‧balance block

31‧‧‧ screw holes

32‧‧‧ openings

33‧‧‧Adjustment fixtures

331‧‧‧ screw

332‧‧‧Blocking bumps

Claims (7)

A collet having a balance adjusting structure, comprising: a collet comprising a main shaft, the main shaft has a portion and a rotary cylinder at two ends along a direction of the shaft thereof, the collet having at least one ring groove, the ring groove The axis of the main shaft is a center of the circle, and is circular around the axis of the main shaft. The width of the bottom of the ring groove is larger than the width of the opening of the ring groove; and the plurality of balance blocks, the width of the bottom of each balance block is a balance block. The width of the top is large, and each of the balance blocks is accommodated in the ring groove, and each has an adjusting fixing member for adjusting whether the balance block is fixed on the ring groove, and the balance is balanced. When the block is not fixed on the ring groove, the balance block can be displaced relative to the ring groove; and the relative position of each balance block in the ring groove is changed to adjust the movement of the chuck when rotating balance. A collet having a balance adjustment structure according to claim 1, wherein each of the balance blocks has a circular arc shape with respect to the ring groove to be embedded in the ring groove. The collet with a balance adjustment structure according to claim 1, wherein the front end face of the seat portion has a plurality of jaws, and the inner edge of the seat portion and the rear end face is coupled with the main shaft, and the ring groove is formed on the ring groove. The outer edge of the end face of the seat. A collet having a balance adjusting structure according to claim 1, wherein the rotating cylinder is coupled to the main shaft with a front end surface thereof, and the annular groove is formed at an outer edge of the rear end surface of the rotating cylinder. The collet with a balance adjustment structure according to claim 1, wherein the ring groove and each of the balance blocks have a dovetail shape. The collet with a balance adjustment structure according to any one of the preceding claims, wherein the balance block is provided with a screw hole at the center, and the screw hole has a side of the balance block. An opening, wherein the adjusting member is a screw member and a blocking protrusion, the screw member is screwed to the screw hole, and the blocking protrusion is received in the opening, the blocking protrusion radial direction The length is greater than the radial extent of the opening. The chuck having a balance adjustment structure according to any one of the items 1 to 5, wherein the balance block is three in number, and is accommodated in the ring groove, and is third-order. Divide the ring groove.