Tool rest for numerical control machine tool

Abstract

The utility model discloses a knife rest for a numerical control machine tool, which comprises a main body unit and a protection unit, the main body unit comprises a shell and a knife rest mounted on the shell, a plurality of screw holes are formed in the knife rest, bolts are in threaded connection in the screw holes, and the protection unit comprises a plurality of threaded holes formed in the bottom of the knife rest. The bolt is rotated to move downwards in the screw hole, when a nut of the bolt extrudes a second rubber pad, the second rubber pad drives the disc, the annular sleeve and the pressing ring to move downwards, the pressing ring compresses a spring, at the moment, the first rubber pad abuts against the tool rest, the second rubber pad abuts against the nut of the bolt, and the annular sleeve and the annular barrel prevent metal chippings from falling into the position between the screw hole and the bolt; and the threaded barrel is in threaded connection with the threaded hole, so that after the bolt penetrates through the threaded hole, the excessive part of the bolt can be embedded into the threaded barrel, at the moment, the excessive part of the bolt is protected by the threaded barrel, and metal chippings are prevented from being attached to the excessive part of the bolt.

Description

Technical Field

[0001] The utility model relates to the technical field of tool rests, in particular to a tool rest for a numerically controlled machine tool. Background Art

[0002] The CNC tool holder is the most common auxiliary device for CNC lathes. It enables the CNC lathe to complete multiple or even all processing steps in one clamping of the workpiece, so as to shorten the auxiliary processing time and reduce the errors caused by multiple installations of the workpiece during the processing, thereby improving the processing efficiency and processing accuracy of the machine tool.

[0003] Announcement No. CN 219683969 U discloses a tool holder structure for a CNC machine tool. An aluminum cover and a screw member are provided on the outer surface of the tool holder body. The screw member is threadedly connected to the inside of the aluminum cover. A limit plate is provided on the screw member. A fixing mechanism is provided on the outer surface of the limit plate. The fixing mechanism is used to fix the loose screw member. The fixing mechanism includes a tooth block, a spring, and a fixing plate. The tooth block is fixedly sleeved on the end of the screw member. The limit plate is movably clamped on the outer surface of the tooth block. The spring is fixedly connected to the upper surface of the limit plate. The fixing plate is sleeved on the outer surface of the aluminum cover. The other end of the spring is fixedly connected to the lower surface of the fixing plate.

[0004] The above-mentioned prior art has the following problems during use: the existing tool holder is mainly installed and fixed by bolts, and during the use of the tool holder of the CNC machine tool, steps such as knife cutting will generate a lot of fine metal debris. These fine debris may leak into the gap between the bolt and the screw hole, and some will adhere to the threaded section of the extra bolt. These debris are small and difficult to clean, resulting in the debris causing wear and damage to the threaded section between the screw hole and the bolt when the bolt is subsequently disassembled and rotated, thereby causing slippage and affecting the firmness of the installation. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above-mentioned problems of a tool rest for a numerically controlled machine tool, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a tool holder for CNC machine tools, which is used to solve the problem that the tool holder of existing CNC machine tools will generate a lot of fine metal debris during the use of knife cutting and other steps. These fine debris may leak into the gap between the bolt and the screw hole, and some will adhere to the threaded section of the extra bolt. These debris are small and difficult to clean, resulting in wear and damage to the threaded section between the screw hole and the bolt during the subsequent disassembly and rotation of the bolt, which will lead to slippage of the threads and affect the firmness of the installation.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a tool holder for a CNC machine tool, comprising:

[0009] The main unit comprises a shell and a tool holder mounted on the shell, wherein a plurality of screw holes are provided in the tool holder, and bolts are threadedly connected in the screw holes;

[0010] The protection unit includes a plurality of threaded holes opened at the bottom of the tool holder, and the plurality of threaded holes are respectively connected to the corresponding screw holes, a threaded barrel is threadedly connected to the threaded hole, the bottom of the bolt can be embedded in the threaded barrel, and a protection component is provided on the top of the tool holder to prevent debris from damaging the screw hole and the thread of the bolt.

[0011] As a preferred solution of a tool holder for a CNC machine tool described in the utility model, the protection component includes an annular cylinder, an inner cavity and an annular groove are opened in the annular cylinder, and the inner cavity and the annular groove are connected, and the annular groove is located above the inner cavity, an annular sleeve is slidably connected in the inner cavity and the annular groove, and a disc is fixed on the top of the annular sleeve.

[0012] As a preferred solution of the tool holder for a CNC machine tool described in the utility model, the diameter of the inner cavity is larger than the diameter of the annular groove, a pressure ring is fixed to the bottom of the annular sleeve, and the pressure ring is slidably fitted in the inner cavity.

[0013] As a preferred solution of the tool rest for a numerically controlled machine tool described in the utility model, the diameter of the pressure ring is larger than the diameter of the annular groove and smaller than the diameter of the inner cavity.

[0014] As a preferred solution of the tool holder for a CNC machine tool described in the utility model, a plurality of springs are arranged in the inner cavity, one end of the spring is fixed to the pressure ring, and the other end of the spring is fixed to the inner wall of the inner cavity.

[0015] As a preferred solution of the tool holder for a CNC machine tool described in the utility model, a rubber pad 2 is fixed to the top of the disc, and the rubber pad 2 can be abutted against the nut of the bolt, and a rubber pad 1 is fixed to the bottom of the annular cylinder, and the bottom of the rubber pad 1 abuts against the top of the tool holder.

[0016] The beneficial effects of the utility model are as follows: the bolt is rotated to move downward in the screw hole, and when the nut of the bolt squeezes the rubber pad 2, it drives the disc, the annular sleeve, and the pressure ring to move downward, so that the pressure ring compresses the spring. At this time, the rubber pad 1 and the tool holder are tightly pressed, and the rubber pad 2 and the bolt nut are tightly pressed, so that the annular sleeve and the annular cylinder block metal debris from falling into the gap between the screw hole and the bolt, thereby protecting the screw hole and the bolt, and by threading the threaded cylinder and the threaded hole, when the bolt passes through the screw hole, the excess part of the bolt will be embedded in the threaded cylinder. At this time, the threaded cylinder protects the excess part of the bolt to prevent metal debris from adhering to the excess bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 The utility model is a structural schematic diagram of a tool holder for a CNC machine tool.

[0019] Figure 2 The utility model is a partial cross-sectional structural schematic diagram of a tool holder for a CNC machine tool.

[0020] Figure 3 The utility model is a schematic diagram of the partial structural section of a tool holder for a CNC machine tool.

[0021] Figure 4 This is a schematic diagram of the structure of the protection component provided by the utility model.

[0022] Description of the drawings: 100, main unit; 101, housing; 102, tool holder; 103, screw hole; 104, bolt; 200, protection unit; 201, threaded hole; 202, threaded cylinder; 203, protection assembly; 2031, annular cylinder; 2032, inner cavity; 2033, annular groove; 2034, annular sleeve; 2035, disc; 204, pressure ring; 205, spring; 206, rubber pad one; 207, rubber pad two. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] Reference Figure 1-Figure 4 , which is an embodiment of the utility model, provides a tool rest for a numerically controlled machine tool, which includes: a main unit 100 and a protection unit 200;

[0028] The main unit 100 includes a housing 101 and a tool holder 102 mounted on the housing 101. The tool holder 102 is provided with a plurality of screw holes 103. Bolts 104 are threadedly connected to the screw holes 103.

[0029] The protection unit 200 includes a plurality of threaded holes 201 opened at the bottom of the tool holder 102, and the plurality of threaded holes 201 are respectively connected to the corresponding screw holes 103, a threaded tube 202 is threadedly connected to the threaded hole 201, the bottom of the bolt 104 can be embedded in the threaded tube 202, and a protection component 203 is provided on the top of the tool holder 102 to prevent debris from damaging the threads of the screw hole 103 and the bolt 104.

[0030] In addition, the protection component 203 includes an annular cylinder 2031, in which an inner cavity 2032 and an annular groove 2033 are opened, and the inner cavity 2032 and the annular groove 2033 are connected, and the annular groove 2033 is located above the inner cavity 2032, and an annular sleeve 2034 is slidably connected in the inner cavity 2032 and the annular groove 2033, and a disc 2035 is fixed on the top of the annular sleeve 2034.

[0031] When in use, when the tool holder 102 is installed and fixed by the bolt 104, the threaded tube 202 and the threaded hole 201 are first threadedly connected, and then the protection component 203 is placed on the tool holder 102, and the annular tube 2031 and the screw hole 103 are communicated, and then the bolt 104 is passed through the annular sleeve 2034 and the annular tube 2031, and then the bolt 104 and the screw hole 103 are threadedly connected. After the bolt 104 passes through the screw hole 103, the excess part of the bolt 104 will be embedded in the threaded tube 202. At this time, the threaded tube 202 protects the excess part of the bolt 104 to prevent metal debris from adhering to the excess bolt 104

[0032] In addition, the diameter of the inner cavity 2032 is larger than the diameter of the annular groove 2033, a pressure ring 204 is fixed to the bottom of the annular sleeve 2034, and the pressure ring 204 is slidably fitted in the inner cavity 2032, the diameter of the pressure ring 204 is larger than the diameter of the annular groove 2033, and smaller than the diameter of the inner cavity 2032, a plurality of springs 205 are arranged in the inner cavity 2032, one end of the spring 205 is fixed to the pressure ring 204, and the other end of the spring 205 is fixed to the inner wall of the inner cavity 2032, a rubber pad 207 is fixed to the top of the disc 2035, and the rubber pad 207 can be abutted against the nut of the bolt 104, a rubber pad 206 is fixed to the bottom of the annular cylinder 2031, and the bottom of the rubber pad 206 abuts against the top of the tool holder 102.

[0033] During use, when the bolt 104 and the screw hole 103 are threadedly connected, the bolt 104 is rotated to move it downward in the screw hole 103. When the nut of the bolt 104 squeezes the rubber pad 207, it drives the disc 2035, the annular sleeve 2034, and the pressure ring 204 to move downward, so that the pressure ring 204 compresses the spring 205. At this time, the rubber pad 1 206 and the tool holder 102 are tightly pressed, and the rubber pad 207 and the nut of the bolt 104 are tightly pressed, so that the annular sleeve 2034 and the annular cylinder 2031 prevent metal debris from falling into the gap between the screw hole 103 and the bolt 104, thereby protecting the screw hole 103 and the bolt 104.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tool rest for a CNC machine tool, characterized in that: include: A main unit (100) comprises a housing (101) and a tool holder (102) mounted on the housing (101), wherein a plurality of screw holes (103) are provided in the tool holder (102), and bolts (104) are threadedly connected to the screw holes (103); The protection unit (200) comprises a plurality of threaded holes (201) formed at the bottom of a tool holder (102), wherein the plurality of threaded holes (201) are respectively connected to corresponding screw holes (103), a threaded barrel (202) is connected to the inner thread of the threaded hole (201), the bottom of the bolt (104) can be embedded in the threaded barrel (202), and a protection component (203) is provided at the top of the tool holder (102) to prevent debris from damaging the screw hole (103) and the thread of the bolt (104).

2. The tool rest for a CNC machine tool according to claim 1, characterized in that: The protection component (203) comprises an annular cylinder (2031), an inner cavity (2032) and an annular groove (2033) are provided in the annular cylinder (2031), the inner cavity (2032) and the annular groove (2033) are connected, and the annular groove (2033) is located above the inner cavity (2032), an annular sleeve (2034) is slidably connected in the inner cavity (2032) and the annular groove (2033), and a disc (2035) is fixed on the top of the annular sleeve (2034).

3. The tool rest for a CNC machine tool according to claim 2, characterized in that: The diameter of the inner cavity (2032) is greater than the diameter of the annular groove (2033); a pressure ring (204) is fixed to the bottom of the annular sleeve (2034), and the pressure ring (204) is slidably fitted in the inner cavity (2032).

4. The tool rest for a CNC machine tool according to claim 3, characterized in that: The diameter of the pressure ring (204) is larger than the diameter of the annular groove (2033) and smaller than the diameter of the inner cavity (2032).

5. The tool rest for a CNC machine tool according to claim 3, characterized in that: A plurality of springs (205) are arranged in the inner cavity (2032), one end of the spring (205) is fixed to the pressure ring (204), and the other end of the spring (205) is fixed to the inner wall of the inner cavity (2032).

6. The tool rest for a CNC machine tool according to claim 2, characterized in that: A rubber pad 2 (207) is fixed on the top of the disc (2035), and the rubber pad 2 (207) can abut against the nut of the bolt (104). A rubber pad 1 (206) is fixed on the bottom of the annular cylinder (2031), and the bottom of the rubber pad 1 (206) abuts against the top of the tool holder (102).

Images