TWI547345B - A spindle device with cutting fluid flow - Google Patents

Description

Spindle device with cutting fluid circulation structure

In particular, the present invention provides a spindle device having a cutting fluid flow-through structure that not only reduces the number of assembled components, but also greatly reduces yaw and vibration when the drive shaft rotates, thereby improving machining accuracy and reducing assembly cost.

Pressing, when cutting work on the machine tool, the tool and the workpiece are generally sprayed with the cutting fluid to provide cooling, lubrication and chip removal. In order to ensure that the cutting fluid is sprayed on the tool and the workpiece, the spindle device is directly The input cutting fluid is connected, and then the tool end of the spindle device is sprayed on the tool and the workpiece; as shown in Figures 1 and 2, the conventional spindle device 10 is mounted in the body 11 and can be driven to rotate by the power source. a shaft 12 is disposed in the shaft 12, and a broaching rod 13 having a shaft hole 131 is formed. The bottom end of the broaching rod 13 is coupled with a jaw (not shown), and the broaching rod 13 and the rotating shaft 12 The spring is sleeved (not shown in the drawing) to push the broaching rod 13 up, and the clamping jaw is used as a broaching action; a cylinder 14 with a piston 141 and a telescopic rod 142 is attached thereto. An adapter rod 15 having a shaft hole 151 is disposed in the top of the body 11 and is disposed in the telescopic rod 142 of the cylinder 14 . The bottom end of the adapter rod 15 is locked to the broach rod 13 and can be The broaching rod 13 rotates in the same direction, and the piston 141 of the cylinder 14 can drive the telescopic rod 142 to protrude against the transfer. The rod 15 moves the broaching rod 13 downward, and drives the clamping jaw to act as a loosening knife, and the top end of the connecting rod 15 is threaded through the telescopic rod 142 of the pressure cylinder 14 and is provided with a socket portion 152 having a polygonal shape; and a cutting fluid is supplied to the shaft hole 131 of the adapter rod 15, and a rotary joint group 20 is attached to the top end of the body 11, and the rotary joint group 20 is attached to the body. A top body 11 is provided with a body 21, and the base body 21 is provided with a channel 211 for connecting the cutting fluid supply device. The inner end of the channel 211 is provided with a first sleeve 22 and is at the bottom of the first sleeve 22. a first abutment ring 23 made of a wear-resistant material (such as tantalum carbide) is disposed at the end, and a second sleeve 24 is disposed in the base body 21 by a plurality of bearings 212, and the second sleeve 24 is disposed in the second sleeve 24 A sleeve portion 241 having a polygonal shape is disposed to correspondingly sleeve the sleeve portion 152 of the adapter rod 15 , and a top portion of the second sleeve 24 is provided with a wear-resistant material (such as tantalum carbide). The second abutment ring 25 and the second abutment ring 25 abut each other; when the rotation of the rotating shaft 12 is driven, the broaching rod 13, the adapter rod 15, the second sleeve 24 and the second abutment ring 25 disposed at the top end of the second sleeve 24 is rotated in synchronization with the rotating shaft 12 for cutting work, and is further input by the channel 211 of the seat body 21 of the swivel joint group 20 The liquid flows through the first abutment ring 23 and the second abutment ring 25 to the sleeve portion 241 of the second sleeve 24, and then flows through the shaft hole 151 of the adapter rod 15 to the broach bar 13 In the shaft hole 131, the first sleeve 22 and the first abutment ring 23 that are not rotated and the second sleeve 24 and the second abutment ring 25 that rotate together abut each other, so that the cutting fluid flows smoothly to The shaft hole 151 of the adapter rod 15 and the shaft hole 131 of the broaching rod 13 are sprayed with the cutting fluid at the tool end of the rotating shaft 12; however, the spindle device 10 is still assembled as follows in the assembly of the rotary joint group 20 and the use thereof. Disadvantages:

1. Since the swivel joint set 20 is a generally commercially available fixed type of assembly, the swivel joint set 20 must be mounted on the top end of the main body 11 so that the adaptor rod 15 must extend and extend out of the press cylinder. The length of the 14 telescopic rod 142 The second sleeve 24 of the swivel joint group 20 is sleeved. However, when the drive shaft 12 rotates at a high speed, the length of the adapter rod 15 is prone to yaw and vibration, thereby affecting the machining accuracy. .

2. The adapter rod 15 is rotated in conjunction with the polygonal sleeve portion 241 of the second sleeve 24, and a polygonal sleeve portion 152 is provided at the top end. Since the adapter rod 15 must be made with the broaching rod 13 The upper and lower displacement movements of the pulling and the loosening knife must have a proper fitting gap between the sleeve portion 241 of the second sleeve 24 and the socket portion 152 of the adapter rod 15 to enable the adapter rod 15 and The broaching rod 13 can be smoothly displaced up and down. However, when the driving shaft 12 is rotated at a high speed, the splicing gap is liable to cause yaw and vibration, thereby affecting the machining accuracy.

3. The rotary joint group 20 mainly abuts against the rotating second abutment ring 25 by the non-rotating first abutment ring 23, so that the cutting fluid smoothly flows to the shaft hole 151 of the adapter rod 15 and the broach rod 13 In the shaft hole 131, in order to erect the non-rotating first abutment ring 23 and the rotating second abutment ring 25, it is necessary to attach the seat body 21 to the main body 11 of the spindle device 10 and to place the first abutment. The first sleeve 22 of the ring 23 must be provided with a plurality of bearings 212 in the seat body 21, and the second sleeve 24 of the second abutment ring 25 is disposed in the plurality of bearings 212. , and significantly increase the cost of assembly and equipment.

In order to improve the problems arising from the above-mentioned practical use, the inventors have been engaged in research and development and production experience of related industries for many years, and have conducted in-depth research on the problems currently faced. After long-term efforts and trials, the inventors have finally developed a kind of cutting. The spindle device of the liquid circulation structure is used to improve the drawbacks of the prior art, which is the design tenet of the present invention.

A first object of the present invention is to provide a spindle device having a cutting fluid circulation structure, which is provided with a rotating shaft that can be rotated by a power source, and a broaching rod with a shaft hole is bored in the rotating shaft. The top of the broaching rod is connected with an adapter of a shaft hole, and a pressure cylinder with a telescopic rod is arranged on the top of the shank, and the telescopic rod of the pressure cylinder is protruded and pressed against the adapter to drive the pulling The arbor is moved downwards, and the telescopic rod of the cylinder is provided with a shaft hole, and a rotary joint assembly is arranged between the shaft hole of the telescopic rod and the shaft hole of the adapter, the rotary joint assembly a sleeve is disposed at a bottom of the shaft hole of the telescopic rod, and a first abutting ring is disposed at a bottom end of the sleeve, and a second abutting ring is disposed at a top end of the shaft hole of the adapter, and the The first abutment ring and the second abutment ring are abutted against each other to form a passage for circulating the cutting fluid; thereby, the rotary joint assembly is installed between the telescopic rod of the pressure cylinder and the adapter, thereby shortening the rotation The length of the connector and the occurrence of the sleeve gap of the rotary drive can be avoided, and the drive shaft is rotated greatly Low deflection and vibration phenomena, to achieve practical benefits to enhance the machining accuracy of.

A second object of the present invention is to provide a spindle device having a cutting fluid circulation structure. Since the telescopic rod of the pressure cylinder is in a non-rotating state, the first abutment ring is directly disposed on the telescopic rod of the pressure cylinder, and the adapter is The second abutment ring is disposed at the top end of the shaft hole, and the first abutment ring and the second abutment ring are mutually abutted, and the rotary joint assembly is disposed between the telescopic rod of the pressure cylinder and the adapter. In order to form a passage for the flow of cutting fluid, the assembled components can be greatly reduced, and the practical benefit of reducing assembly and equipment costs can be achieved.

Conventional part:

10‧‧‧ spindle device

11‧‧‧Ontology

12‧‧‧ shaft

13‧‧‧ broach

131‧‧‧Axis hole

14‧‧‧Cylinder

141‧‧‧Piston

142‧‧‧ Telescopic rod

15‧‧‧Adapter rod

151‧‧‧Axis hole

152‧‧‧ Sockets

20‧‧‧Slewing joint group

21‧‧‧ body

211‧‧‧ channel

212‧‧‧ bearing

22‧‧‧First casing

23‧‧‧First abutment ring

24‧‧‧second casing

241‧‧‧ seg

25‧‧‧second abutment ring

Part of the invention:

30‧‧‧ spindle device

31‧‧‧Ontology

311‧‧‧ 容 部

312‧‧‧ flow path

32‧‧‧ shaft

33‧‧‧ broach

331‧‧‧Axis hole

34‧‧‧Adapters

341‧‧‧Axis hole

342‧‧‧Shield

35‧‧‧pressure cylinder

351‧‧‧Piston

352‧‧‧ Telescopic rod

3521‧‧ ‧ retaining ring

3522‧‧‧Class

3523‧‧‧Axis hole

3524‧‧‧Locking Department

36‧‧‧Slewing joint assembly

361‧‧‧ casing

362‧‧‧First abutment ring

363‧‧‧second abutment ring

364‧‧‧Flexible components

40‧‧‧Tools

Fig. 1 is a schematic view showing the structure of a conventional spindle device.

Fig. 2 is an enlarged schematic view of a portion of Fig. 1.

Figure 3: Schematic diagram of the structure of the present invention.

Figure 4: An enlarged view of a portion of Figure 3.

Figure 5: Schematic diagram of the operation of the present invention when inserting a tool (1).

Figure 6: Schematic diagram of the action of the present invention when inserting a tool (2).

Figure 7 is a schematic view of the operation of the present invention during processing.

Figure 8 is an enlarged schematic view of a portion of Figure 7.

As shown in FIG. 3 and FIG. 4 , the main shaft device 30 of the present invention is provided with a main body 31 , and a receiving portion 311 is disposed in the main body 31 , and a hollow portion is disposed in the receiving portion 311 of the main body 31 . a rotating shaft 32, the bottom end of the rotating shaft 32 is inserted with a tool, and the rotating shaft 32 is driven to rotate by a power source. In the embodiment, the spindle device 30 is a built-in spindle, and the body 31 is There is a built-in motor (not shown in the figure). Since the driving method of the built-in motor is already familiar to the industry, it will not be described in detail; a rotating and rotating motion is arranged in the rotating shaft 32. The broaching rod 33 is provided with a shaft hole 331 therein, and the bottom end is connected with a clamping jaw (not shown), and a spring is arranged between the broaching rod 33 and the rotating shaft 32 ( Not shown in the drawings), in order to push the broaching rod 33 up, and to drive the jaws as a broaching action, since the design of the broaching rod 33, the jaws and the spring is already familiar to the industry, it is not To be described later, the adapter member 34 is coupled to the top end of the broach 33, and in the embodiment, the bottom end of the adapter 34 is The locking mechanism is fixed to the top end of the broaching rod 33, and is internally provided with a shaft hole 341 communicating with the shaft hole 331 of the broaching rod 33; and a pressure cylinder of different rotation is disposed in the top of the body 31. 35, the inside of the cylinder 35 is provided with a two-piston 351, and the two pistons 351 are provided with a telescopic rod 352, the bottom of the telescopic rod 352 is fixed with a retaining ring 3521, and the top is provided with a class edge 3522, and The second piston 35 can be driven 1 abutting the retaining ring 3521 of the telescopic rod 352, and driving the bottom end of the telescopic rod 352 to protrude against the adapter 34, and moving the broaching rod 33 downward to drive the jaws to loosen the knife. When the two pistons 351 are driven to rise and reset, the two pistons 351 push against the step edge 3522 of the telescopic rod 352, and the bottom end of the telescopic rod 352 is released from the adapter 34, and the broach lever 33 is The telescopic rod 352 of the cylinder 35 is provided with a shaft hole 3523, and a locking portion 3524 is provided at the top end of the shaft hole 3523 for connection. a conduit connected to the cutting fluid supply device for inputting cutting fluid into the shaft hole 3523 of the telescopic rod 352; a rotary joint assembly 36 is disposed between the telescopic rod 352 of the cylinder 35 and the adapter member 34, The shaft hole 3523 of the telescopic rod 352 and the shaft hole 341 of the adapter 34 are rotated by the cylinder 35 because the telescopic rod 352 of the cylinder 35 is in a different rotational state. A sleeve 361 is disposed at the bottom of the shaft hole 3523 of the rod 352, and a spring elastic member 364 is disposed on the top of the sleeve 361 to push downward The sleeve 361 is provided with a first abutment ring 362 made of a wear-resistant material (such as tantalum carbide) at the bottom end of the sleeve 361, so that the first abutment ring 362 is identical to the telescopic rod of the pressure cylinder 35. 352 is a different dynamic rotation state, and a second abutment ring 363 made of a wear-resistant material (such as tantalum carbide) is fixed to the top end of the shaft hole 341 of the synchronously rotating adapter 34, so that the second The abutment ring 363 can rotate with the adapter 34; since the top of the sleeve 361 is provided with a spring-like elastic member 364, the sleeve 361 can make the first abutment ring 362 of the bottom end and the adapter The second abutting ring 363 of the top end of the extension rod 363 is in contact with each other, and the sleeve 361, the first abutment ring 362 and the second abutment ring 363 are communicated with the shaft hole 3523 of the telescopic rod 352 and the adapter member 34. Between the shaft holes 341 to form a passage through which the cutting fluid flows, so that the pressure The shaft hole 3523 of the telescopic rod 352 of the cylinder 35 passes through the input cutting fluid, and can flow through the sleeve 361, the first abutment ring 362 and the second abutment ring 363 to the shaft hole 341 of the adapter 34, and then The shaft hole 341 of the adapter member 34 flows to the shaft hole 331 of the broach bar 33, and the cutting fluid is sprayed on the tool end of the rotating shaft 32. In addition, the first abutting ring 362 and the second abutment are prevented. A small portion of the cutting fluid leaking between the ring 363 flows between the body 31 and the rotating shaft 32, and affects the rotation of the rotating shaft 32. The outer portion of the adapter member 34 is provided with a shield 342, and the body 31 is correspondingly protected. A flow passage 312 communicating with the outside is disposed below the cover 342, and a portion of the cutting fluid leaking between the first abutment ring 362 and the second abutment ring 363 can flow along the shield 342 to the body 31. The flow path 312 is discharged.

Referring to FIG. 5, when the spindle device 30 of the present invention is being processed, the locking portion 3524 of the telescopic rod 352 of the cylinder 35 is connected to a pipe connected to the cutting fluid supply device. The shaft hole 3523 of the telescopic rod 352 of the pressure cylinder 35 inputs the cutting fluid, and the second piston 351 of the cylinder 35 pushes the retaining ring 3521 to push the bottom end of the telescopic rod 352 to protrude against the adapter. 34, and the broach 33 is moved downward to drive the jaws to perform the loosening action, and the tool changing mechanism of the tool changer is used to insert a cutter 40 at the bottom end of the rotating shaft 32. Since the first abutment ring 362 of the swivel joint assembly 36 is pushed against the elastic member 364 at the top of the sleeve 361, and the second abutment ring 363 is abutted against each other, the telescopic rod of the press cylinder 35 When the 352 is pressed against the adapter 34, the telescopic rod 352 compresses the elastic member 364 of the rotary joint assembly 36; as shown in Fig. 6, when the cutter 40 is inserted at the bottom end of the rotary shaft 32, In addition, the two pistons 351 of the pressure cylinder 35 are driven up and down, and the two pistons 351 push the frame edge 3522 of the telescopic rod 352 to make the expansion and contraction The bottom 352 of the When the squeegee 33 is pressed against the adapter 34, the broach lever 33 is pushed up by the spring, and the jaw is driven to perform the broach operation, and the cutter 40 is inserted and positioned at the bottom end of the rotating shaft 32.

Referring to FIGS. 7 and 8, after the tool 40 is inserted and positioned, the rotation of the rotating shaft 32 is started, and the broaching rod 33 and the adapter 34 rotate with the rotating shaft 32, and the rotary joint is rotated. The second abutment ring 363 of the assembly 36 rotates in conjunction with the adapter 34, and the first abutment ring 362 that rotates differently from the rotary joint assembly 36 abuts against each other, so that the cylinder 35 is The shaft hole 3523 of the telescopic rod 352 passes through the input cutting fluid, and flows through the sleeve 361, the first abutment ring 362 and the second abutment ring 363 to the shaft hole 341 of the adapter 34, and the transfer is performed. The shaft hole 341 of the piece 34 flows to the shaft hole 331 of the broach bar 33, and the cutting fluid is sprayed on the tool end of the rotating shaft 32 to facilitate the cutting operation of the tool 40; thereby, the present invention directly utilizes the difference The telescopic rod 352 of the rotary cylinder 35 is provided with a first abutment ring 362 of the swivel joint assembly 36, and a second abutment ring 363 of the swivel joint assembly 36 is mounted on the co-rotating adapter 34. Therefore, compared with the spindle device generally matched with the commercially available rotary joint, it can not only reduce the fitting rotary joint The components of the member 36 (such as the seat body, the plurality of bearings, etc.) can shorten the length of the adapter member 34, in addition to avoiding the sleeve gap of the rotary transmission, and the deflection of the drive shaft 32 can be greatly reduced. And the vibration phenomenon, and achieve the practical benefits of improving the processing accuracy and reducing the cost of assembly and equipment.

In summary, the present invention is a practical and progressive design. However, the same product and publication are not disclosed, so that the patent application requirements are met, and the application is filed according to law.

30‧‧‧ spindle device

31‧‧‧Ontology

311‧‧‧ 容 部

312‧‧‧ flow path

32‧‧‧ shaft

33‧‧‧ broach

331‧‧‧Axis hole

34‧‧‧Adapters

341‧‧‧Axis hole

342‧‧‧Shield

35‧‧‧pressure cylinder

351‧‧‧Piston

352‧‧‧ Telescopic rod

3521‧‧ ‧ retaining ring

3522‧‧‧Class

3523‧‧‧Axis hole

3524‧‧‧Locking Department

36‧‧‧Slewing joint assembly

361‧‧‧ casing

362‧‧‧First abutment ring

363‧‧‧second abutment ring

364‧‧‧Flexible components

Claims (10)

The utility model relates to a spindle device with a cutting fluid circulation structure, which comprises: a body; a rotating shaft: is erected in the body and driven to rotate by a power source; the broaching rod is disposed in the rotating shaft and is internally provided The shaft hole; the adapter is connected to the top end of the broaching rod and has a shaft hole therein; the pressure cylinder is disposed in the body, and is provided with a telescopic rod with a shaft hole, and is pressed by the protrusion The adapter is configured to move the broaching rod downwardly; the slewing joint assembly is provided with a sleeve at the bottom of the shaft hole of the telescopic rod of the pressure cylinder, and the first end of the sleeve is provided at the bottom end of the sleeve The second abutment ring is disposed on the top end of the shaft hole of the adapter, and the first abutment ring and the second abutment ring are mutually abutted. A spindle device having a cutting fluid circulation structure according to claim 1, wherein the power source of the rotating shaft is a built-in motor. The spindle device of the cutting fluid circulation structure according to the first aspect of the invention, wherein the bottom end of the broach bar is coupled with a clamping jaw, and a spring is disposed between the broaching bar and the rotating shaft to The shank is pushed up, and the jaw is driven to perform the broaching action. The spindle device of the cutting fluid circulation structure according to the first aspect of the invention, wherein the bottom end of the adapter is fixed to the top end of the broach bar in a locking manner. A spindle device having a cutting fluid circulation structure according to claim 1, wherein the outer portion of the adapter is provided with a shield, and the body is provided with a flow passage connecting the outer portion corresponding to the outer portion of the shield . A spindle device having a cutting fluid circulation structure according to the first aspect of the patent application, wherein a piston is disposed inside the cylinder, and the telescopic rod is disposed on the piston, and the bottom of the telescopic rod is fixed a ring, the top is provided with a class edge, and the piston is pushed against the retaining ring of the telescopic rod, and the bottom end of the telescopic rod is protruded and pressed against the adapter, and the piston is pushed against the class of the telescopic rod The edge of the telescopic rod is released from the adapter. A spindle device having a cutting fluid circulation structure according to the first aspect of the invention, wherein the shaft end of the cylinder has a locking portion for connecting a pipe connected to the cutting fluid supply device. A spindle device having a cutting fluid circulation structure according to claim 1, wherein the first abutment ring of the rotary joint assembly is made of a wear resistant material. A spindle device having a cutting fluid circulation structure according to claim 1, wherein the second abutment ring of the rotary joint assembly is made of a wear resistant material. The spindle device with the cutting fluid circulation structure according to the first aspect of the patent application, wherein the top of the sleeve of the rotary joint assembly is provided with an elastic member for pushing the sleeve downward to make the first abutment The ring and the second abutment ring remain in abutment with each other.