Tool holders and cutting tools

Abstract

The present invention provides a tool handle and a cutting tool having the tool handle. The tool handle includes a body, a liquid, a blade clamp and an adjusting screw; the body extends from the rear end toward the front end along the central axis, and has a groove arranged on the outer periphery of the front end and a cavity arranged behind the groove; the liquid fills the cavity; the blade clamp can be installed with a blade; the blade clamp is installed in the groove, in contact with the liquid, and can move forward and backward along the direction of the central axis under the hydraulic pressure of the liquid; the contact surface between the blade clamp and the liquid has a first area; one end of the adjusting screw is in contact with the liquid; the contact surface between the adjusting screw and the liquid has a second area. The present invention can conveniently adjust the position of the blade clamp forward and backward to achieve the adjustment of the forward and backward position of the blade.

Description

Technical Field

[0001] The present invention relates to the technical field of tool technology, in particular to a tool handle and a cutting tool. Background Art

[0002] In cutting tools, the position accuracy of the blade relative to the tool holder is an important parameter that reflects the accuracy of the tool. In situations where the machine tool cannot eliminate the tool error through tool setting operations, the above parameters will affect the size of the machined workpiece and the surface quality of the machined surface. Since there are manufacturing errors in the blade and the tool holder, in order to eliminate these manufacturing errors and to fix the blade at the position set by the tool holder with high precision, a blade position adjustment device is usually set on the tool holder to improve the shape accuracy of the tool by adjusting the position of the blade.

[0003] Chinese invention patent application CN108284244A introduces a mechanism for adjusting the blade of a cutting tool. It includes a handle body, a blade clamp for mounting the blade, and a wedge block for adjustment at the rear end of the blade clamp. The adjustment wedge block is fixed to the handle by screws. Tightening the screws drives the wedge block to move inward. The inclined surface of the wedge block presses the blade clamp, pushing the blade clamp to move upward, thereby achieving the purpose of blade adjustment. In this scheme, by adjusting the wedge block, a high-precision adjustment can be achieved by changing the inclined surface angle of the wedge block. However, the blade can only be adjusted in one direction. If it is adjusted too much and wants to be adjusted back, it is necessary to disassemble the parts and reinstall the adjustment, which is inconvenient to operate and has low adjustment efficiency. In addition, this adjustment scheme has problems such as a large number of parts, high cost, cumbersome operation, and lack of convenience. Summary of the invention

[0004] An object of the present invention is to provide a knife handle which is convenient for adjusting the position of a blade forward and backward.

[0005] Another object of the present invention is to provide a cutting tool having the above-mentioned tool holder.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present invention, the present invention provides a tool handle, including a body, a liquid, a blade clamp and an adjusting screw; the body extends from the rear end toward the front end along the central axis, and has a groove arranged on the outer periphery of its front end and a cavity arranged behind the groove; the liquid fills the cavity; the blade clamp can be installed with a blade; the blade clamp is installed in the groove, contacts with the liquid, and can move forward and backward along the direction of the central axis under the action of the liquid pressure of the liquid; the contact surface between the blade clamp and the liquid has a first area; one end of the adjusting screw contacts with the liquid; the contact surface between the adjusting screw and the liquid has a second area.

[0008] According to another aspect of the present invention, the present invention further provides a cutting tool, comprising a blade and the tool holder as described above, wherein the blade is detachably mounted on the blade holder.

[0009] According to yet another aspect of the present invention, the present invention further provides a cutting tool, comprising a blade and the tool holder as described above, wherein the blade and the blade holder are an integral structure.

[0010] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects: In the knife handle of the present invention, the front-back movement of the blade clamp relative to the body can be achieved by operating the adjusting screw and using the liquid to transmit the force, thereby adjusting the front-back position of the blade. The front-back movement of the blade clamp can respond quickly and is easy to adjust. According to the characteristic that the pressure in all directions of the liquid is equal, in the present invention, the adjusting screw can play an adjusting role by contacting with the liquid, so that the adjusting screw has a high degree of positional freedom and can be arranged in a convenient operating position to improve the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the cutting tool of the present invention.

[0012] Figure 2 yes Figure 1 Schematic diagram of the matching structure between one of the blade clips and the body.

[0013] Figure 3 is Figure 2 Schematic diagram of the structure of the blade clamp cut away on the basis.

[0014] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the middle blade clamp.

[0015] Figure 5 yes Figure 4 It is a front view, and a sealing ring is provided on the blade clamp.

[0016] Figure 6 yes Figure 1 Schematic diagram of the principle of blade position adjustment.

[0017] Figure 7 It is a schematic diagram of the three-dimensional structure of the second embodiment of the cutting tool of the present invention.

[0018] Figure 8 yes Figure 7 Schematic diagram of the matching structure between one of the blade clips and the body.

[0019] Fig. 9 yes Figure 7 Schematic diagram of the principle of blade position adjustment.

[0020] Fig.10 It is a three-dimensional structural schematic diagram of the third embodiment of the cutting tool of the present invention.

[0021] Fig.11 1 is a schematic diagram of the three-dimensional structure of the fourth embodiment of the cutting tool of the present invention, in which a partial cross-section is performed.

[0022] Fig.12 yes Fig.11 A partial enlarged schematic diagram of point C in the middle.

[0023] The reference numerals are as follows: 10 / 10a / 10b / 10c, cutting tool; 20, adjusting tool;

[0024] 1 / 1a / 1b / 1c, handle;

[0025] 11 / 11a / 11b / 11c, body; 111, groove; 112 / 112a / 112c, cavity; 113, locking hole; 114a, adjustment hole; 115c, channel;

[0026] 12 / 12a / 12c, liquid;

[0027] 13 / 13a / 13b / 13c, blade clamp; 131, blade mounting portion; 132, blade mounting groove; 133, blade fastening hole; 134, adjustment cavity; 135, adjustment hole; 136, slot; 137, locking surface;

[0028] 14 / 14a / 14b / 14c, adjustment screw; 145, operation hole; 141b, coarse adjustment screw; 142b, fine adjustment screw;

[0029] 15 / 15a / 15c, locking screw;

[0030] 16. The first sealing ring;

[0031] 17. Second sealing ring;

[0032] 2 / 2a / 2c, blade;

[0033] 3. Tighten the blade screws. DETAILED DESCRIPTION

[0034] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0035] The invention provides a tool handle and a cutting tool having the tool handle. When the cutting tool is in use, the tool handle is mounted on a machine tool, and a blade on the tool handle is used to process a workpiece.

[0036] For ease of expression, the end of the cutting tool that is closer to the machine tool when in use is defined as the "rear end", and correspondingly, the end that is away from the machine tool is defined as the "front end".

[0037] Figures 1 to 6 The structure of a first embodiment of a cutting tool 10 according to the present invention is shown.

[0038] See also Figure 1 The cutting tool 10 of this embodiment is a face milling cutter disc structure, which includes a tool handle 1 and a plurality of blades 2 mounted on the tool handle 1. The plurality of blades 2 are evenly distributed on the periphery of the front end of the tool handle 1.

[0039] Preferably, the blade 2 is fixedly mounted on the handle 1 by a blade fastening screw 3. Thus, the blade 2 of this embodiment can be replaced. For example, when the blade 2 is worn or reaches the end of its service life, the blade 2 can be removed and replaced with a new blade 2. The form of the blade 2 can be adaptively designed according to actual needs and is not limited here.

[0040] See also Figure 1 and Figure 2 The tool handle 1 mainly includes a body 11, a liquid 12, a blade clamp 13, an adjusting screw 14, a locking screw 15, a first sealing ring 16 and a second sealing ring 17. The body 11 is a main structural component of the tool handle 1, which is configured to be installed on a machine tool and is used to contain and fix the liquid 12, the blade clamp 13, the adjusting screw 14, the locking screw 15, the first sealing ring 16 and the second sealing ring 17.

[0041] The body 11 is a rotating part as a whole, and extends from the rear end toward the front end along a central axis L. The central axis L extends along the front-back direction, and is also the central axis of rotation of the cutting tool 10 during machining.

[0042] The body 11 has a plurality of grooves 111 disposed on the periphery of the front end thereof, a plurality of cavities 112 disposed correspondingly behind the grooves 111, and a plurality of locking holes 113 disposed on the periphery thereof. In this embodiment, the plurality of cavities 112 are isolated from each other and are not connected.

[0043] The groove 111 extends in the front-to-back direction and is used to install the blade clamp 13. The cavity 112 is used to fill the liquid 12. In this embodiment, the cavity 112 corresponds to and communicates with the groove 111. The cavity 112 is generally cylindrical, and its axis is parallel to the central axis L. Each locking hole 113 also corresponds to and communicates with each groove 111, so that the locking screw 15 can penetrate.

[0044] The front end of the groove 111 penetrates the front end surface of the body 11, the side of the groove 111 penetrates the outer peripheral surface of the body 11, and an opening (not numbered in the figure) is formed on the outer peripheral surface of the body 11. In this embodiment, along the radial direction of the body 11, the groove 111 has a structure with a larger internal space and a smaller opening. Figure 1 The cross section of the groove 111 is roughly circular, the width of the groove 111, i.e., the diameter of the circle, is D1, and the width of the opening is D2, wherein D1>D2. The opening is small in size, and can form a stopper for the blade clamp 13 in the radial direction, preventing the blade clamp 13 from flying out radially, thereby improving safety.

[0045] The liquid 12 is filled in the cavity 112 of the body 11. The liquid 12 can be fluid such as water, hydraulic oil, etc.

[0046] See also Figures 2 to 5 The blade holder 13 can be used to install the blade 2. The main body of the blade holder 13 is generally cylindrical, and a blade installation portion 131 protrudes from the front end in a circumferential direction for installing the blade 2. Specifically, Figure 4 As shown, the blade mounting portion 131 is provided with a blade mounting groove 132 for accommodating the blade 2 and a blade fastening hole 133 for fastening and cooperating with the blade fastening screw 3 .

[0047] The main body of the blade clamp 13 is adaptively mounted in the groove 111 of the body 11. The rear end of the blade clamp 13 extends into the cavity 112, contacts the liquid 12, and can move forward and backward under the hydraulic pressure of the liquid 12, and the direction of its forward and backward movement is parallel to the central axis L. The contact surface between the blade clamp 13 and the liquid 12 has a first area S1. In this embodiment, the first area S1 is the end surface area of ​​the blade clamp 13, and is also the cross-sectional area of ​​the cavity 112.

[0048] In this embodiment, the blade clamp 13 is further provided with an adjustment cavity 134, which passes through the rear end face of the blade clamp 13, thereby communicating with the mold cavity 112 and receiving the liquid 12. The blade clamp 13 is provided with an adjustment hole 135 in front of the adjustment cavity 134; the adjustment hole 135 is communicated with the adjustment cavity 134 and passes through the front end face of the blade clamp 13.

[0049] A groove 136 is formed around the outer periphery of the rear end of the blade clamp 13 to seal with the cavity 112 through the first sealing ring 16. A planar locking surface 137 is also formed on the outer periphery of the blade clamp 13, and the locking surface 137 faces the locking hole 113 of the body 11, and is used to cooperate with the locking screw 15 to lock the position of the blade clamp 13.

[0050] See also Figure 2 and Figure 3The adjusting screw 14 is installed in the blade clamp 13, the head of the adjusting screw 14 is accommodated in the adjusting hole 135, and the rod of the adjusting screw 14 extends from the adjusting hole 135 into the adjusting cavity 134 to contact the liquid 12. The adjusting screw 14 can be threadedly connected to the adjusting hole 135 or threadedly connected to the adjusting cavity 134. The moving direction of the liquid 12 can be adjusted by screwing the adjusting screw 14 in or out, thereby driving the blade clamp 13 to move forward and backward.

[0051] In this embodiment, the adjusting screw 14 is installed in the blade clamp 13 from the front end of the blade clamp 13, and the head of the adjusting screw 14 is provided with an operating hole 145, which is exposed to the front end face of the blade clamp 13, so that the operator can adjust from the front end of the cutting tool 10, which is convenient for operation. The operating hole 145 can be a hexagonal hole or other structural forms that are convenient for tool operation.

[0052] The pitch of the adjusting screw 14 is d, and the contact surface between the adjusting screw 14 and the liquid 12 has a second area S2. In this embodiment, the second area S2 is the cross-sectional area of ​​the adjusting cavity 134 and the rear end surface area of ​​the adjusting screw 14. In this preferred embodiment, the second area S2 < the first area S1.

[0053] Combination Figure 1 and Figure 2 The locking screw 15 is screwed into the locking hole 113 of the body 11, and is opposite to the locking surface 137 of the blade clamp 13. When the cutting tool 10 is processing, the inner end of the locking screw 15 abuts against the locking surface 137 of the blade clamp 13, and the blade clamp 13 is fixed in the body 11. When the front and rear position of the blade clamp 13 needs to be adjusted, the locking screw 15 can be loosened so that it no longer abuts against the blade clamp 13.

[0054] It should be noted that it is well known to those skilled in the art that when the cutting tool 10 is processing, the position of the blade 2 and the handle 1 must be fixed, and specifically in this embodiment, the blade clamp 13 needs to be fixed to the body 11, and the specific fixing method can be implemented in various forms in the relevant technology. In this embodiment, after the front and rear positions of the blade clamp 13 are adjusted, it is not limited to which fixing method is used to fix the blade clamp 13 to the body 11.

[0055] See also Figures 2 to 5 The first sealing ring 16 is sleeved on the outer periphery of the blade clamp 13, and the second sealing ring 17 is sleeved on the outer periphery of the adjusting screw 14, respectively playing the role of mobile sealing. The first sealing ring 16 and the second sealing ring 17 can be made of rubber elastic material.

[0056] As for the first sealing ring 16 mounted on the blade clamp 13, the first sealing ring 16 is mounted in the groove 136 of the blade clamp 13 and is elastically deformed by the inner circumferential wall of the cavity 112, so as to be in close contact with the outer circumferential surface of the blade clamp 13 and the inner circumferential wall of the cavity 112, thereby maintaining the seal between the blade clamp 13 and the cavity 112.

[0057] Similarly, the second sealing ring 17 sleeved on the adjusting screw 14 is in close contact with the outer peripheral surface of the adjusting screw 14 and the inner peripheral wall of the adjusting cavity 134 to maintain the seal between the adjusting screw 14 and the adjusting cavity 134 .

[0058] Based on the above description, see Figure 6 In the knife handle 1 of this embodiment, the front and rear position adjustment process of the blade clamp 13 is roughly as follows.

[0059] Place the knife handle 1 on a platform with the front end of the knife handle 1 facing upwards. Loosen the locking screw 15 corresponding to the blade clamp 13 that needs to be adjusted.

[0060] At this time, the operating hole 145 of the adjusting screw 14 faces upward, and a suitable adjusting tool 20 can be inserted into the operating hole 145, and the adjusting tool 20 can be rotated to drive the adjusting screw 14 to rotate, so that the adjusting screw 14 moves upward or downward relative to the body 11. In this embodiment, the adjusting tool 20 can be a hexagonal wrench corresponding to the hexagonal hole of the operating hole 145.

[0061] When the adjusting screw 14 moves downward, the adjusting screw 14 applies a downward force to the liquid 12, so that the liquid 12 in the adjusting chamber 134 moves downward into the cavity 112. Since the volume change of the liquid 12 is very limited, compared with the position adjustment of the blade clamp 13, the volume change of the liquid 12 can be ignored, and the volume of the liquid 12 can be considered unchanged. When the liquid 12 in the adjusting chamber 134 enters the cavity 112, the cavity 112 needs to expand to accommodate the newly entered liquid 12, so that the liquid 12 will push the blade clamp 13 to move upward, so as to achieve the position adjustment of the blade clamp 13 moving forward relative to the body 11.

[0062] When the adjusting screw 14 moves upward, the volume in the adjusting chamber 134 increases, and the liquid 12 in the cavity 112 enters the adjusting chamber 134. The liquid 12 in the cavity 112 produces a suction effect on the blade clamp 13, driving the blade clamp 13 to move downward, so that the cavity 112 shrinks and the total volume of the liquid 12 is maintained unchanged. At this time, the position adjustment of the blade clamp 13 relative to the main body 11 is realized.

[0063] After the blade clamp 13 is adjusted to a predetermined position, the corresponding locking screw 15 is tightened again to fix the blade clamp 13 to the body 11 .

[0064] As can be seen from the above adjustment process, in this embodiment, the front and rear position adjustment of the blade holder 13 is achieved by screwing in or out the adjustment screw 14. By the force exerted by the adjustment screw 14 on the liquid 12, according to the characteristic that the volume of the liquid remains unchanged, the liquid 12 pushes the blade holder 13 forward or sucks it backward, and then the blade holder 13 moves back and forth to complete the position adjustment. The front and rear movement of the blade holder 13 can respond quickly and is convenient to adjust.

[0065] Assume that when the adjustment screw 14 rotates one week, the distance that the blade holder 13 moves is Δh.

[0066] When the adjustment screw 14 rotates one week, the linear movement distance of it is its pitch d, and the contact area between it and the liquid 12 is the second area S2, then the volume change amount caused by its rotation of one week is d×S2. The contact area between the blade holder 13 and the liquid 12 is the first area S1, then the volume change amount caused by its movement of Δh is Δh×S1.

[0067] Since the volume of the liquid remains unchanged, the volume change amount caused by the rotation of the adjustment screw 14 for one week must be equal to the volume change amount caused by the movement of the blade holder 13. Therefore, the following equation holds: d×S2 = Δh×S1.

[0068] Thus, Δh = d×S2÷S1. It can be seen from this that the position adjustment accuracy of the blade holder 13 is positively correlated with S2 / S1 and the pitch d.

[0069] And in this embodiment, there are further the following conditions: S2 < S1. Thus, the movement amount Δh of the blade holder 13 brought about by the rotation of the adjustment screw 14 for one week is less than the pitch d, that is, the adjustment of a smaller distance can be realized, and higher adjustment accuracy can be obtained. In practical applications, the ratio of S2 to S1 can also be reasonably designed to obtain the required adjustment accuracy. And the pitch d of the adjustment screw 14 can be selected as a larger value to improve the strength of the adjustment screw 14 and reduce the processing difficulty of the adjustment screw 14.

[0070] Figures 7 to 9 Schematically shows the structure of the second embodiment of the cutting tool 10a of the present invention.

[0071] Refer to Figure 7 and Figure 8 In this second embodiment, the cutting tool 10a is basically the same as the cutting tool 10 of the first embodiment, the difference being that: in this second embodiment, the position where the adjustment screw 14a is provided on the tool holder 1a is different.

[0072] Specifically, in the second embodiment, the adjusting screw 14a is installed on the body 11a of the handle 1a. The outer peripheral surface of the body 11a is provided with an adjusting hole 114a. The adjusting screw 14a is installed on the body 11a from the outer periphery of the body 11a, and is threadedly engaged with the adjusting hole 114a. The inner end of the adjusting screw 14a extends into the cavity 112a and contacts the liquid 12a. Accordingly, the blade clamp 13a does not need to be provided with an adjusting cavity 134 and an adjusting hole 135.

[0073] For other structures in the second embodiment, reference may be made to the description of the first embodiment, and the description will not be repeated here.

[0074] See also Fig. 9 When adjusting the position of the blade clamp 13a of the cutting tool 10a of the second embodiment, the tool handle 1a is installed on the tool adjustment device, with the front end of the tool handle 1a facing upward. At this time, the operator can loosen the locking screw 15a corresponding to the blade clamp 13a to be adjusted, and use the adjustment tool 20 to rotate and adjust the adjustment screw 14a from the outer periphery of the body 11a, so that the blade clamp 13a moves up and down. The adjustment principle is the same as that of the first embodiment, and will not be described in detail here.

[0075] Fig.10 The structure of a third embodiment of a cutting tool 10b according to the present invention is shown.

[0076] The third embodiment differs from the first and second embodiments in that two adjusting screws 14b are provided corresponding to the same blade clamp 13b, namely a coarse adjustment screw 141b with a first pitch d1 and a fine adjustment screw 142b with a second pitch d2.

[0077] In the third embodiment, the installation method of the coarse adjustment screw 141b refers to the installation method of the adjustment screw 14 in the first embodiment, and the installation method of the fine adjustment screw 142b refers to the installation method of the adjustment screw 14a in the second embodiment. The structure of the blade clamp 13b and the body 11b refers to the structure of the first and second embodiments.

[0078] Coarse adjustment screw 141b and liquid ( Fig.10 The contact surface of the fine adjustment screw 142b (not shown) has a second coarse adjustment area S21, and the contact surface of the fine adjustment screw 142b and the liquid has a second fine adjustment area S22; the product of the first pitch d1 and the second coarse adjustment area S21 is greater than the product of the second pitch d2 and the second fine adjustment area S22.

[0079] Based on the principles described above, the volume changes caused by the rotation of the coarse adjustment screw 141b and the fine adjustment screw 142b are the same as the volume changes caused by the forward and backward movement of the blade clamp 13b. When the coarse adjustment screw 141b rotates one circle, the distance the blade clamp 13b moves forward and backward is Δh1, then Δh1=d1×S21÷S1; when the fine adjustment screw 142b rotates one circle, the distance the blade clamp 13b moves forward and backward is Δh2, then Δh2=d2×S22÷S1. Since d1×S21>d2×S22, therefore, Δh1>Δh2.

[0080] Therefore, when the blade clamp 13b needs to be adjusted to a large distance, it can be adjusted by the coarse adjustment screw 141b for quick adjustment; and when the blade clamp 13b needs to be adjusted to a small distance, it can be adjusted by the fine adjustment screw 142b to achieve higher precision. By setting different adjustment screws 14b, it can be adapted to different adjustment occasions, and the operation is more convenient and flexible.

[0081] The pitch size of the coarse adjustment screw 141b and the fine adjustment screw 142b, as well as the size of their respective contact surfaces with the liquid, can be designed according to actual conditions, so that the product of the pitch of the two and the second area is different to achieve differentiated adjustment of the blade clamp 13b.

[0082] It should be noted that the installation positions of the coarse adjustment screw 141b and the fine adjustment screw 142b are not limited to Fig.10 For example, the positions of the two can be reversed, or if the structure permits, the two can be both mounted on the body 11b, or both mounted on the blade holder 13b, as long as they are both in contact with the liquid.

[0083] Fig.11 and Fig.12 The structure of a fourth embodiment of a cutting tool 10c according to the present invention is shown.

[0084] The main difference between the fourth embodiment and the second embodiment is that in the fourth embodiment, all the cavities 112c in the body 11c are connected as one.

[0085] Specific reference Fig.12 The body 11c is provided with a channel 115c between two adjacent cavities 112c, connecting the two cavities 112c into one. On the body 11c, all the cavities 112c are connected through such a channel 115c to form an annular cavity, and the liquid 12c fills the entire cavity.

[0086] Each blade clamp 13c extends into a corresponding cavity 112c to contact the liquid 12c, and is fixed to the body 11c via a locking screw 15c.

[0087] Only one adjusting screw 14c is provided, which extends into one of the cavities 112c to contact the liquid 12c.

[0088] When the front and rear positions of the blade clamps 13 c need to be adjusted, all blade clamps 13 c may be adjusted in batches, or a specific blade clamp 13 c may be adjusted individually.

[0089] The general process of batch adjustment is as follows.

[0090] Loosen the locking screws 15c of all blade clamps 13c, and place the cutting tool 10c on a horizontal platform with the front end of the handle 1c facing downward. The blade 2c installed on the blade clamp 13c with a large protrusion first contacts the horizontal platform. Under the action of gravity, the blade clamp 13c with a large protrusion moves backward, and the blade clamp 13c compresses the liquid 12c in its rear end cavity 112c to flow to other cavities 112c. For the blade 2c installed on the blade clamp 13c with a small protrusion, since it does not contact the horizontal platform, the blade clamp 13c is not subjected to force, and its rear end cavity 112c receives the liquid 12c squeezed from other cavities 112c and moves forward. Finally, the purpose of all blades 2c on the blade clamp 13c contacting the horizontal platform is achieved, and the adjustment goal of consistent protrusion of all blades 2c is achieved. After adjustment, if the front and rear positions of the blade 2c need to be further adjusted, the adjusting screw 14c can be rotated, and the blade clamp 13c can be driven to move forward and backward through the volume change caused by the movement of the adjusting screw 14c.

[0091] The general process of individual adjustment is as follows.

[0092] Loosen the locking screw 15c corresponding to the blade clamp 13c that needs to be adjusted, and rotate the adjusting screw 14c. Since the cavities 112c are all connected, the liquid 12c drives the blade clamp 13c to move forward and backward.

[0093] Based on the structure of the fourth embodiment, the adjusting screw 14c can also be set to multiple, set at different positions, so as to facilitate adjustment from different parts. The multiple adjusting screws 14c can respectively realize the functions of coarse adjustment and fine adjustment. When the required adjustment distance is different, different adjusting screws 14c are used for adjustment. The adjusting screw 14c can also be set to extend into the channel 115c and contact the liquid 12c.

[0094] Furthermore, in some other feasible embodiments, it is not limited to that all the cavities 112c are connected as a whole, and only two or more of the cavities 112c are connected as a whole, and the positions of the corresponding two or more blade clamps 13c are adjusted by adjusting the screws 14c.

[0095] In the above-mentioned several embodiments of the cutting tools, the blade is described as being detachably mounted on the blade clamp of the tool handle. It is understandable that in some other embodiments not shown, the blade may also be an integral structure with the blade clamp of the tool handle, which will not be described in detail here.

[0096] Based on the description of each of the above embodiments, it can be known that in the cutting tool and the tool handle of the present invention, the front-back movement of the blade clamp relative to the body can be achieved by operating the adjusting screw and using the liquid to transmit the force, thereby adjusting the front-back position of the blade. The front-back movement of the blade clamp can respond quickly and is easy to adjust. According to the characteristic that the pressure in all directions of the liquid is equal, in the present invention, the adjusting screw can play an adjusting role by contacting with the liquid, so that the adjusting screw has a high degree of positional freedom and can be arranged in a convenient operating position to improve the convenience of operation.

[0097] Furthermore, by setting the size of the contact area between the adjusting screw, the blade clamp and the liquid, a very high adjustment accuracy can be obtained.

[0098] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A knife handle, characterized in that: include: A body extending from the rear end toward the front end along the central axis and having a groove arranged on the outer periphery of the front end and a cavity arranged behind the groove; a liquid filling the cavity; Blade clip to mount the blade; The blade clamp is installed in the groove, in contact with the liquid, and can move forward and backward along the direction of the central axis under the hydraulic pressure of the liquid; the contact surface between the blade clamp and the liquid has a first area; and An adjusting screw, one end of which is in contact with the liquid; a contact surface between the adjusting screw and the liquid has a second area, There are multiple adjusting screws, including at least one coarse adjustment screw with a first pitch and at least one fine adjustment screw with a second pitch, the contact surface between the coarse adjustment screw and the liquid has a second coarse adjustment area, and the contact surface between the fine adjustment screw and the liquid has a second fine adjustment area; the product of the first pitch and the second coarse adjustment area is greater than the product of the second pitch and the second fine adjustment area.

2. The knife handle according to claim 1, characterized in that: The second area is smaller than the first area.

3. The knife handle according to claim 1, characterized in that: The blade clamp is provided with an adjusting cavity, which is communicated with the mold cavity to receive the liquid; the adjusting screw is installed on the blade clamp and extends into the adjusting cavity to contact with the liquid.

4. The knife handle according to claim 3, characterized in that: The cross-sectional area of ​​the regulating cavity is the second area.

5. The knife handle according to claim 3, characterized in that: The adjusting screw is installed in the blade clamp from the front end of the blade clamp.

6. The knife handle according to claim 1, characterized in that: The adjusting screw is installed on the main body from the outer periphery of the main body and extends into the mold cavity to contact the liquid.

7. The knife handle according to claim 1, characterized in that: The outer peripheries of the adjusting screw and the blade clamp are both sleeved with sealing rings.

8. The knife handle according to claim 1, characterized in that: The main body is provided with a plurality of grooves and a corresponding plurality of cavities along its outer circumference; the blade clamps are multiple and are installed one by one in each of the grooves.

9. The knife handle according to claim 8, characterized in that: The plurality of cavities are isolated from each other; and the adjusting screw is provided corresponding to each cavity.

10. The knife handle according to claim 8, characterized in that: The plurality of mold cavities include at least one first mold cavity and at least one second mold cavity, and the first mold cavity and the second mold cavity are connected to each other as a whole.

11. The knife handle according to claim 1, characterized in that: The groove is formed with an opening on the outer peripheral surface of the body; the width of the opening is smaller than the width of the interior of the groove.

12. A cutting tool, comprising a blade and a tool holder according to any one of claims 1 to 11, wherein the blade is detachably mounted on the blade holder.

13. A cutting tool, comprising a blade and a tool holder according to any one of claims 1 to 11, wherein the blade and the blade holder are an integral structure.

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