TWI753371B - Cutting mechanism for forging - Google Patents

Abstract

The invention provides a cutting device for forging, comprising: a tool holder, a protruding part is formed on one side of a central mounting groove, a fixing surface lower than the height of the protruding part is formed on the opposite side of the protruding part, and the hooking groove is formed with the height of the protruding part. The width direction is formed at a predetermined position on the vertical surface of the protruding part; the blade is in the same shape as the installation groove of the tool holder, and the blade body with hooking protrusions on both sides is integrally formed on the lower side, and a supporting surface is formed at both ends. The fixing block is fixed on the fixing surface of the tool holder, so that one side of the blade body does not slip upwards. In addition, a combination groove is formed in the center of the installation groove of the tool holder to connect the combination in the center of the bottom surface of the blade body. The protrusion forms a holding groove on the fixing surface of the tool holder, and is easily inserted into the holding protrusion formed on the bottom surface of the fixing block.

Description

Cutting device for forging

The invention relates to a cutting device for forging to ensure the convenience of blade replacement, the accuracy of blade combination and the reliability of blade combination maintenance.

All of the cutting devices for forging described in the present invention are applicable to movable cutting devices and fixed cutting devices used to cut round bars or the like to a predetermined length by providing a set of pressing devices such as a press. In general, the cutting device is divided into a knife holder and a blade. In this cutting device, the blade holder is attached to the pressurizing device, and the blade is inevitably worn (including damage, etc.) when used repeatedly. In this case, when a blade change is required, the entire cutting device is now replaced by the pressing device.

For the above problems, the maintenance/management cost of the cutting device is increased, and the efficiency of the round bar cutting operation is significantly reduced along with the problem of taking a long working time required for replacement. Furthermore, in the case of replacing the entire cutting device, there is a problem in that it is required to adjust the alignment of the cutting device every time it is replaced.

In order to solve the above-mentioned problems, a cutting device that separates constituting a fixing member and a knife holder is disclosed by Korean Patent Registration No. 0807072 (hereinafter, referred to as "prior art").

The above-mentioned prior art can solve the existing problem of replacing the entire cutting device due to problems such as blades. However, because the fixing of the blade to the blade holder is only dependent on the fixing parts on both sides of the blade, the The stability of the fixation, and, every time the blade is replaced, it is found that the fixation position of the blade is often different. Also, the prior art is particularly concerned that the holding force of the blade holder is not maintained under repeated use of the cutting device, as initially shown, assuming that under varying holding forces, an unacceptable failure resulting in round bar cutting occurs. problem.

Prior art literature: Patent Document 0001) (KR) Patent Publication No. 10-0807072.

The present invention is invented to solve the problems shown in the prior art, and the purpose of the present invention is to accurately and firmly perform the combination and fixation of the blade to the tool holder, and does not change or move even in the case of physical impact or repeated use The combined state and fixed position.

Another object of the present invention is to facilitate the operations of joining, securing and separating the blades.

The technical solution of the present invention is that the forging cutting device of the present invention comprises: a tool holder, a protruding part is formed on the side of the central mounting groove, and a fixing surface lower than the height of the protruding part is formed on the opposite side of the protruding part, The vertical surface of the part has a predetermined position in the width direction of the protruding part to form a hook groove; the blade has the same shape as the installation groove of the tool holder, and the blade body with hook protrusions on both sides is integrally formed to the lower side. The end forms a supporting surface; the fixing block is fixed on the fixing surface of the tool holder, so that the hooking protrusion on one side of the blade body does not slip upwards.

In addition, a coupling groove is formed in the center of the mounting groove of the blade holder, so as to connect the coupling protrusion in the center of the bottom surface of the blade body. In addition, a holding groove is formed on the fixing surface of the tool holder for insertion. The holding protrusion on the bottom surface of the fixed block.

10: Tool holder

11: Installation groove

12: Combine grooves

13: Protrusions

131: Vertical plane

132: Hanging card groove

133: discharge groove

14: Fixed surface

141: Holding groove

20: Blades

21, 22: Support surface

23: Blade body

231: Combined protrusions

232, 233: Hanging card protrusions

30: Fixed block

31: Grip protrusions

32: Front end

33: Side

40: Bolts

50: support plate

51: Placement groove

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is a perspective view of a state in which FIG. 1 is assembled.

FIG. 3 is a front illustration of the present invention.

FIG. 4(A) is an exemplary side sectional view of the fixing block combined with the tool rest, and FIG. 4(B) is another exemplary view of FIG. 4(A).

FIG. 5 is a diagram showing an example of a mobile cutting device that forms a set with FIG. 1 .

FIG. 6 is another example diagram of FIG. 5 .

FIG. 7(A) is a schematic front view of the stationary cutting device constituting a set with FIG. 6 , and FIG. 7(B) is a schematic plan view of FIG. 7(A).

The specific content of the technical solution for solving the problem of the present invention will be specifically described as follows with reference to the accompanying drawings. However, the drawings are exaggerated, omitted, or schematically shown for the convenience of explanation of the main parts. The terms and names used in the description are implicitly limited by the shape of the structure, function, use, etc., and are not lexicographical definitions. In addition, the specific structure, shape, figure, arrangement, size, etc. of the structures identified in the drawings confuse the operation of the structures and their corresponding functions and effects derived from the drawings, and detailed descriptions are omitted.

The cutting device for forging of the present invention is constituted by a tool holder 10 , a blade 20 , and a fixed block 30 . The above-mentioned structure of the stationary cutting device such as FIG. 1 and FIG. 7 can also be applied to the mobile cutting device such as FIG. 5 and FIG. 6 . The stationary cutting device of FIG. 1 and the movable cutting device of FIG. 5 are configured as a set and installed in the pressing device, and the movable cutting device of FIG. 6 and the stationary cutting device of FIG. 7 are configured as a set and installed in the pressing device.

When the tool holder 10 forms a protrusion 13 and a fixing surface 14 on both sides of the mounting groove 11 forming the coupling groove 12 in the center, the height of the fixing surface 14 is formed at a position lower than the height of the protrusion 13 . The protruding portion 13 is formed with a hook groove 132 on the same line as the fixing surface 14 , a vertical surface 131 is formed on the inner side, and a discharge groove 133 is formed on the inside and rear of the upper surface when cutting a round bar. Here, the protruding portion 13 is formed with the same width as the tool holder 10 , the hooking groove 132 is formed through the width direction of the protruding portion 13 , and the discharge groove 133 is connected with the hooking groove 132 .

The blade 20 has the same shape as the mounting groove 11 of the blade holder 10 , a coupling protrusion 231 is formed in the center of the bottom surface to be combined with the coupling groove 12 , and the blade body 23 with hook protrusions 232 and 233 formed on both sides is formed on the lower side. . A blade 20 having support surfaces 21 and 22 formed at both ends is integrally formed on the upper side of the blade body 23 .

The fixing block 30 is formed at a height of about a height that produces a difference between the protruding portion 13 of the tool holder 10 and the fixing surface 14 , and the fixing surface 14 is in close contact with the bottom surface and is fixed by bolts 40 or the like.

To sum up, the shape of the mounting groove 11 of the tool holder 10 and the blade body 23 are semi-circular, and a holding groove 141 is formed in the center of the fixing surface 14 to connect with the holding protrusion 31 on the bottom surface of the fixing block 30. The holding protrusion 31 is formed to the inside of the front end 32 of the fixed block 30 .

With the tool holder 10 having the above structure, in the case of explaining the organic coupling relationship between the blade 20 and the fixing block 30, when the blade body 23 is attached to the mounting groove 11 of the blade holder 10, the blade body 23 The coupling protrusion 231 in the center of the bottom surface is connected to the coupling groove 12 of the mounting groove 11 . At the same time, the hook protrusion 232 on one side of the blade body 23 is inserted into the hook groove 132 formed on the protrusion 13 of the blade holder 10 , and the hook protrusion 233 on the opposite side is exposed. To sum up, the combination position of the blade 20 is achieved by closely abutting one side support surface 21 to the vertical surface 131 of the protruding portion 13 . Thus, when the attachment of the blade 20 to the blade holder 10 is completed, the blade 20 is fixed when the fixing block 30 is attached to the fixing surface 14 and then fixed to the blade holder 10 with the bolts 40 . At this time, the opposite hook protrusion 233 of the blade body 23 is introduced to the bottom surface of the fixing block 30 The inner side is in close contact with the bottom surface, and the side surface 33 of the fixing block 30 presses the opposite support surface 22 of the blade 20 in the direction of the protrusion 13 , whereby the blade 20 is firmly fixed between the protrusion 13 and the fixing block 30 .

In addition, the holding protrusion 31 of the fixing block 30 is formed into a shape that is narrow at the top and wide at the bottom, the holding groove 141 of the tool holder 10 is also formed in the same way as the holding protrusion 31, and the holding protrusion 31 is formed with the holding groove 141. In the case of connection, even if the connection force of the bolt 40 is released due to damage or natural loosening of the bolt 40, it has the function of preventing the sliding of the fixing block 30 during the round bar cutting due to the sudden sliding of the fixing block 30 upward. the resulting safety incidents.

Next, the blade is separated from the blade by the blade holder 10 together with the discharge groove 133 formed in the protruding portion 13 of the blade holder 10 to discharge the foreign matter and cutting oil generated during the pre- and post-processing of the round bar or during the cutting operation. At 20 o'clock, the blade 20 can be easily separated by throwing in a tool or the like.

In the case of combining the respective structures as shown above, the engaging protrusion 231 in the center of the bottom surface of the blade body 23 is connected to the engaging groove 12 of the blade holder 10, thereby firmly preventing the blade 20 integrated with the blade body 23 from slipping in the front-rear direction. . In addition, the hook protrusions 232 and 233 on both sides of the blade body 23 are hooked through the hook grooves 132 of the protruding portion 13 and the fixing block 30 respectively, thereby preventing the blade 20 from slipping upward. In this state, when it is necessary to replace the blade 20 due to repeated round bar cutting operations, etc., in the state where the blade holder 10 is attached to the pressing device, only the fixing block 30 can be separated, which can be quickly and conveniently The blade 20 is disassembled.

Therefore, the present invention facilitates setting the bonding position of the blade 20 by closely contacting the supporting surface 21 of the blade 20 on the vertical surface 131 of the protruding portion 13 and connecting with the coupling protrusion 231 and the coupling groove 12 . Alternatively, the organic combination of the combining protrusions 231 , the combining grooves 12 , the hooking protrusions 232 , 233 and the fixing block 30 is used to stably and firmly maintain the combined state of the blades 20 of the tool holder 10 . In addition, only by fixing and separating from the fixing block 30, the blade 20 can be replaced. That is, the forging cutting device of the present invention is used for precision cutting of round bars, and the present invention is an invention that does not need to worry about the fixed position and slippage or movement of the blade 20 of the tool holder 10 .

In addition, the present invention extends from the rear of the tool holder 10 to form a support plate 50, and forms a semicircular placement groove 51 on the support plate 50, and a round bar is placed in the placement groove 51. During the cutting operation, the movement of the round bar is prevented, and the precision cutting of the round bar is obtained.

In summary of the invention, in order to explain the principle and understanding of the structure to be obtained by the present invention, the structure of the present invention and the specific constituent elements included in the structure are graphically illustrated and described based on the drawings. In addition, although the drawings are shown, the functions and effects of unexplained parts can be sufficiently deduced from the drawings. Therefore, those skilled in the art can make various corrections and changes based on the contents of the present invention.

The beneficial effects of the present invention are as follows: the present invention has the following effects: only the fixing block and the tool holder are combined and separated, so as to realize the fixing and disassembling of the blade. Therefore, in the case where the blade needs to be replaced, the tool holder is installed to the pressurized position. In the state of the device, replace the blade.

The present invention has the following effects, because the combination of the tool holder and the blade is completed through the connection of the groove and the protrusion, the speed and convenience of the combination are ensured, and the blade is kept accurate and the same every time the blade is combined or replaced. binding position.

The present invention has the following effects: when the blade rest is combined with the blade, the jaws on both sides of the blade are hooked to the hook groove and the fixing block, preventing the blade from slipping and moving upward, and the connection between the groove and the protrusion prevents the blade The frame moves in the front-rear direction, and even if physical impact (repetitive round bar cutting, etc.) is applied to the blade after the blade is coupled, slippage and movement of the blade can be stably prevented. The above-mentioned effects are accompanied by the effects of ensuring the reliability of the round bar cutting operation and the safety of the use of the blade.

10: Tool holder

11: Installation groove

12: Combine grooves

13: Protrusions

131: Vertical plane

132: Hanging card groove

133: discharge groove

14: Fixed surface

141: Holding groove

20: Blades

21, 22: Support surface

23: Blade body

231: Combined protrusions

232, 233: Hanging card protrusions

30: Fixed block

31: Grip protrusions

32: Front end

33: Side

40: Bolts

50: support plate

51: Placement groove

Claims (3)

A cutting device for forging, comprising: A tool holder (10), a protruding part (13) is formed on the side of a central mounting groove (11), and a fixing surface (14) lower than the height of the protruding part (13) is formed on the protruding part (13) ) opposite, a hanging card groove (132) is formed in a predetermined position on a vertical surface (131) of the protruding portion (13) through the width direction of the protruding portion (13); A blade (20) has the same shape as the mounting groove (11) of the blade holder (10), and a blade body (23) with several hooking protrusions (232, 233) on both sides is integrally formed on the lower side, forming support surfaces (21, 22) at both ends; and The fixing block (30) is fixed on the fixing surface (14) of the blade holder (10), so that the hooking protrusion (233) on one side of the blade body (23) does not slip upwards. The cutting device for forging according to claim 1, wherein a coupling groove (12) is formed in the center of the mounting groove (11) of the tool holder (10), and is connected to a center of the bottom surface of the blade body (21) Binding protrusions (231). The cutting device for forging according to claim 1, wherein a holding groove (141) is formed on the fixing surface (14) of the tool holder (10) for inserting a groove (141) formed on the bottom surface of the fixing block (30). Hold the protrusion (31).

Images