CN209954288U

CN209954288U - Tool head for expanding knife

Info

Publication number: CN209954288U
Application number: CN201920484072.6U
Authority: CN
Inventors: 江炳堃
Original assignee: Hann Kuen Machinery & Hardware Co Ltd
Current assignee: Hann Kuen Machinery & Hardware Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-01-17
Anticipated expiration: 2029-04-11

Abstract

A tool head for a knife unfolding comprises a shell. The slide rail and the slide block are combined, and the slide rail is fixedly connected with the shell. The spindle unit comprises a spindle fixing seat, a spindle and a spindle motor. The main shaft fixing seat is movably arranged in the shell in a penetrating mode and fixedly connected with the sliding block. The feeding unit drives the main shaft fixing seat to move forward and backward. And the processing unit is arranged on the main shaft fixing seat and moves along with the main shaft fixing seat. Therefore, the key groove transmission error required by relative movement of the main shaft and the processing motor fixing seat can be reduced, and the length of the main shaft and the pull rod can be reduced so as to reduce the processing error.

Description

Tool head for expanding knife

Technical Field

The present invention relates to a tool head, and more particularly to a tool head for a knife.

Background

When the general cutter unfolding tool head is operated, the feeding device is firstly utilized to drive the cutter unfolding head to move to a machining position, then the spindle motor is utilized to drive the cutter unfolding head to rotate, and simultaneously the pull rod is utilized to control the cutter unfolding head to carry out cutter unfolding action, so that a cutter arranged on the cutter unfolding head moves in the radial direction, and further the workpiece is machined.

However, in the aforementioned general tool head for expanding a knife, the spindle and the processing motor fixing seat can move relative to each other, so that there is a design section of the spindle adopting a key slot manner, and the pulley for transmitting the power of the processing motor can also transmit the power to the spindle through the cooperation with the key slot, and the spindle can also move relative to the pulley, however, the arrangement will cause the gap between the pulley and the key slot of the spindle to be enlarged under the long-term operation, and reduce the transmission precision and efficiency. In addition, in order to match the relative movement between the spindle and the machining motor fixing seat, the lengths of the spindle and the pull rod need to be increased, and the machining error needs to be increased, so that the structure needs to be improved.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a tool head for expanding knives, which can reduce the transmission error of the key slot required for the relative movement of the main shaft and the processing motor fixing seat, and can also reduce the length of the main shaft and the pull rod and further reduce the processing error.

The foundation the utility model provides a exhibition sword tool head includes: a housing; the sliding rail and sliding block combination is respectively provided with a sliding rail and a sliding block, the sliding rail is fixedly connected with the shell, and the sliding block is movably arranged on the sliding rail; a main shaft unit having a main shaft fixing seat, a main shaft, and a main shaft motor; the main shaft fixing seat is movably arranged in the shell in a penetrating way and fixedly connected with the sliding blocks, the main shaft is rotatably arranged on the main shaft fixing seat, and the main shaft motor is arranged on the main shaft fixing seat and connected with the main shaft; a feeding unit having a feeding motor fixing base, a feeding motor, a first ball screw, a first nut holding base; the feeding motor fixing seat is fixedly connected with the shell, the feeding motor is arranged on the feeding motor fixing seat, the first ball screw is arranged in the feeding motor fixing seat and is provided with a first screw shaft and a first screw cap, the first screw shaft is connected with the feeding motor, the first screw cap is axially movably arranged on the first screw shaft, and the first screw cap retaining seat is connected with the first screw cap and the main shaft fixing seat; and a processing unit, have a processing motor fixing base, a processing motor, a second ball screw, a pull rod fixing base, this processing motor fixing base rigid coupling this main shaft fixing base, this processing motor fixing base is located to this processing motor, this second ball screw is located in this processing motor fixing base and is had a second screw shaft and a second nut, this processing motor is connected to the one end of this second screw shaft, this second screw shaft is located to this second nut axially movable ground, the second nut of this second ball screw is located to this pull rod fixing base.

Therefore, the key groove transmission error required by relative movement of the main shaft and the processing motor fixing seat can be reduced, and the length of the main shaft and the pull rod can be reduced so as to reduce the processing error.

In addition, the feeding motor fixing seat is provided with a guide groove, and the first nut holding seat can movably penetrate through the guide groove.

Drawings

Fig. 1 is a front view of a first preferred embodiment of the present invention.

Fig. 2 is a top view of the first preferred embodiment of the present invention.

Fig. 3 is a rear view of the first preferred embodiment of the present invention.

Fig. 4 is a partial internal schematic view of a first preferred embodiment of the present invention.

Wherein, the reference numbers:

10 exhibition sword tool bit

11 casing

12 slide rail and slide block combination

121 sliding rail

122 slider

20 spindle unit

21 main shaft fixing seat

22 spindle

23 spindle motor

30 feed unit

31 feeding motor fixing seat

312 guide groove

32 feed motor

33 first ball screw

34 first screw shaft

35 first nut

36 first nut holder

40 processing unit

43 processing motor fixing seat

44 processing motor

45 second ball screw

47 second screw shaft

48 second nut

49 draw bar fixing seat

50 draw bar

52 exhibition tool bit

Detailed Description

To illustrate the technical features of the present invention in detail, the following preferred embodiments are described in conjunction with the drawings, wherein:

referring to fig. 1-4, the tool bit 10 of the present invention includes a housing 11, a plurality of slide rail/slide block assemblies 12, a spindle unit 20, a feeding unit 30, and a processing unit 40.

As shown in fig. 2, the slide rail and slide block assembly 12 has a slide rail 121 and a slide block 122, respectively, the slide rail 121 is fixedly connected to the housing 11, and the slide block 122 is movably disposed on the slide rail 121.

The spindle unit 20 has a spindle holder 21, a spindle 22, and a spindle motor 23. The spindle fixing base 21 is movably disposed through the housing 21 and fixedly connected to the slider 122, one end of the spindle 22 is disposed through the spindle fixing base 21, and the spindle motor 23 is mounted on the spindle fixing base 21 and drives the spindle 22 to rotate.

As shown in fig. 4, the feeding unit 30 has a feeding motor holder 31, a feeding motor 32, and a first ball screw 33. The feeding motor fixing seat 31 is fixedly connected to the housing 11 and has a guiding groove 312. The feeding motor 32 is mounted at one end of the feeding motor holder 31 for providing a power source, and the feeding motor 32 may be a servo motor or a stepping motor, which is not particularly limited herein. The first ball screw 33 is disposed in the feeding motor fixing seat 31 and has a first screw shaft 34 and a first screw cap 35, the first screw shaft 34 is parallel to the main shaft 22 of the main shaft unit 20 and is connected to the feeding motor 32, and the first screw cap 35 is disposed on the first screw shaft 34, so that the first screw shaft 34 can drive the first screw cap 35 to generate axial displacement through the driving of the feeding motor 32. In addition, the feeding unit 30 further has a first nut holder 36, the first nut holder 36 is disposed in the guiding groove 312 of the feeding motor holder 31, the top end of the first nut holder 36 is connected to the first nut 35, and the bottom end of the first nut holder 36 is connected to the spindle holder 21 of the spindle unit 20, so that the first nut holder 36 can be driven by the first nut 35 to move in the guiding groove 312 of the feeding motor holder 31, and the spindle holder 21 and the spindle 22 are driven by the first nut holder 36 to generate an axial displacement.

As shown in fig. 4, the processing unit 40 has a processing motor fixing base 43, a processing motor 44, and a second ball screw 45. The processing motor fixing base 43 is fixedly connected to the spindle fixing base 21, the processing motor 44 is fixed to one end of the processing motor fixing base 43 for providing a power source, and the processing motor 44 may be a servo motor or a stepping motor, which is not particularly limited herein. The second ball screw 45 has a second screw shaft 47 and a second nut 48, one end of the second screw shaft 47 is connected to the processing motor 44, and the second nut 48 is disposed on the second screw shaft 47, such that the second screw shaft 47 can drive the second nut 48 to generate axial displacement through the driving of the processing motor 44. In addition, the processing unit 40 further has a pull rod fixing seat 49, a pull rod 50, and a cutter head 52, the pull rod fixing seat 49 is disposed in the processing motor fixing seat 43 and coaxially sleeved on the second screw shaft 47 of the second ball screw 45, one end of the pull rod fixing seat 49 is locked to the second nut 48 of the second ball screw 45, so that the pull rod fixing seat 49 can synchronously move with the second nut 48, one end of the pull rod 50 can axially move and rotatably penetrate through the main shaft 22 of the main shaft unit 20, the other end of the pull rod 50 can rotatably penetrate through the pull rod fixing seat 49, so that the pull rod fixing seat 49 can be driven by the second nut 48 to apply a pulling force and a pushing force to the pull rod 50, the cutter expanding head 52 is connected to the spindle 22 and the pull rod 50 of the spindle unit 20, so that the spreader head 52 can be moved by the pull rod 50 in addition to the synchronous movement with the main shaft 22.

In practical operation, the feeding motor 32 is first started, the feeding motor 32 drives the first nut holder 36 through the first ball screw 33, and at this time, the first nut holder 36 starts to drive the spindle holder 21, so that the spindle 22 drives the spreader bit 52 to advance to the machining position, and on the other hand, the machining motor holder 43 and the machining motor 44 also move along with the spindle holder 21.

When the spreader head 52 is fed to the machining position and then the spindle motor 23 is started, the spindle motor 23 drives the spindle 22 to start rotating, and at this time, the spreader head 52 rotates along with the spindle 22 on one hand and drives the pull rod 50 to rotate synchronously on the other hand. After the cutter expanding head 52 starts to rotate, the machining motor 44 is then started, the machining motor 44 drives the pull rod fixing seat 49 to move backwards through the second ball screw 45, so that the pull rod fixing seat 49 applies a pulling force to the pull rod 50 in the moving process, and thus, the cutter expanding head 52 can drive a cutter mounted on the cutter expanding head 52 to perform cutter expanding action through the pulling of the pull rod 50.

In conclusion, the utility model discloses an exhibition sword tool head 10 keeps seat 36 to drive main shaft fixing base 21 and processing motor fixing base 43 simultaneously through first nut, can reduce because main shaft 22 and the required keyway transmission error of processing motor fixing base 43 relative movement, also can reduce main shaft 22 and pull rod 50's length and then reduce machining error.

Of course, the present invention can have other embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A tool bit for a knife sharpener, comprising:

a housing;

the sliding rail and sliding block combination is respectively provided with a sliding rail and a sliding block, the sliding rail is fixedly connected with the shell, and the sliding block is movably arranged on the sliding rail;

a main shaft unit having a main shaft fixing seat, a main shaft, and a main shaft motor; the main shaft fixing seat is movably arranged in the shell in a penetrating way and fixedly connected with the sliding blocks, the main shaft is rotatably arranged on the main shaft fixing seat, and the main shaft motor is arranged on the main shaft fixing seat and connected with the main shaft;

a feeding unit having a feeding motor fixing base, a feeding motor, a first ball screw, a first nut holding base; the feeding motor fixing seat is fixedly connected with the shell, the feeding motor is arranged on the feeding motor fixing seat, the first ball screw is arranged in the feeding motor fixing seat and is provided with a first screw shaft and a first screw cap, the first screw shaft is connected with the feeding motor, the first screw cap is axially movably arranged on the first screw shaft, and the first screw cap retaining seat is connected with the first screw cap and the main shaft fixing seat; and

a processing unit, have a processing motor fixing base, a processing motor, a second ball screw, a pull rod fixing base, this processing motor fixing base rigid coupling this main shaft fixing base, this processing motor fixing base is located to this processing motor, this second ball screw is located in this processing motor fixing base and is had a second screw shaft and a second nut, this processing motor is connected to the one end of this second screw shaft, but this second screw shaft is located to this second nut axial displacement, the second nut of this second ball screw is located to this pull rod fixing base.

2. The tool head of claim 1, wherein the feeding motor holder has a guide slot, and the first nut holder is movably disposed in the guide slot.

3. The tool head of claim 1, wherein the feed motor is a servo motor or a stepper motor.

4. The tool head of claim 1, wherein the machining motor is a servo motor or a stepper motor.