Power tool apron

Abstract

The utility model discloses a power tool apron, which comprises a tool apron main body, a power tool apron main body, a power tool apron main body, a power tool apron main body and a power tool apron main body, and is characterized in that the tool apron main body comprises a first end face and a first side face; the transmission shaft is arranged in the mounting hole in a penetrating manner; the first positioning block is embedded in the first mounting groove; the groove bottom of the first installation groove is provided with a first connecting hole used for fixing the first positioning block, and the projection of the axis of the first connecting hole does not coincide with the projection of the axis of the installation hole in the direction perpendicular to the first side face. By adopting the structure, the first connecting hole can be prevented from penetrating through the mounting hole while being deeper, so that the roundness of the mounting hole is ensured, and the adaptability is better.

Description

Technical Field

[0001] This utility model relates to a tool holder, and more particularly to a power tool holder. Background Technology

[0002] A power tool holder is a key functional component on CNC machine tools (such as machining centers and mill-turn centers), primarily used to provide additional rotational power to the cutting tool, enabling complex machining functions. For example, Chinese utility model patent CN208614269U discloses a power tool holder, including a base and a transmission part. The base has a first connecting hole through which the transmission part passes. To ensure accurate installation of the power tool holder and the turret, the base is equipped with a positioning block for positioning with the turret. Specifically, the outer surface of the base has a recessed positioning groove for engaging with the positioning block. The positioning block has a third screw hole, and the inner wall of the positioning groove has a fourth screw hole. A locking screw connects the third and fourth screw holes to fix the positioning block to the base.

[0003] However, the existing fourth screw hole is opened along the radial direction of the first connecting hole and is located in the middle region of the radial direction of the first connecting hole on the side of the base. Since the third connecting hole is a circular hole, the fourth screw hole can easily penetrate into the third connecting hole, thereby affecting the roundness of the third connecting hole and affecting the operating performance of the power tool holder (such as vibration, tool life, etc.).

[0004] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a power tool holder that enables the positioning block to be installed smoothly while avoiding affecting the operating performance of the power tool holder.

[0006] The objective of this utility model is achieved through the following technical solution: a power tool holder, comprising:

[0007] The tool holder body includes a first end face and a first side face, the first end face is provided with a mounting hole, and the first side face is provided with a first mounting groove;

[0008] The drive shaft passes through the mounting hole;

[0009] The first positioning block is embedded in the first mounting groove;

[0010] The first mounting groove has a first connecting hole at the bottom for fixing the first positioning block. The projections of the axes of the first connecting hole and the mounting hole in the direction perpendicular to the first side surface do not coincide.

[0011] Furthermore, the number of the first connecting holes is at least two, and they are respectively located on both sides of the axis of the mounting hole.

[0012] Furthermore, the first mounting groove has a first center line parallel to the axis of the mounting hole, the projection of the first center line and the axis of the mounting hole in a direction perpendicular to the first side surface coincides, and the number of the first connecting holes is two, which are symmetrically arranged on both sides of the first center line.

[0013] Furthermore, the main body of the tool holder is rectangular, and it includes a second side surface, wherein the first end face, the first side surface, and the second side surface are perpendicular to each other;

[0014] The first side is the long side, the second side is the short side, and the center of the mounting hole coincides with the center of the first end face.

[0015] Furthermore, there are two first sides arranged opposite each other, and each first side is provided with a first mounting groove, or only a single first side is provided with a first mounting groove.

[0016] Furthermore, the tool holder body includes a second positioning block, and the second side is provided with a second mounting groove for the second positioning block to be embedded. The bottom of the second mounting groove is provided with a second connecting hole for fixing the second positioning block. The projections of the axes of the second connecting hole and the mounting hole in the direction perpendicular to the second side coincide.

[0017] Furthermore, the second mounting groove has a second center line parallel to the axis of the mounting hole, the second center line coincides with the projection of the axis of the mounting hole in a direction perpendicular to the second side surface, and the number of the second connecting holes is one, which is located at the center of the second mounting groove.

[0018] Furthermore, there are two second sides, which are arranged opposite to each other, and each second side is provided with a second mounting groove.

[0019] Furthermore, both the first connecting hole and the second connecting hole are blind holes.

[0020] Furthermore, the dimension of the second mounting groove along the direction perpendicular to the first side is smaller than the dimension of the first mounting groove along the direction perpendicular to the second side.

[0021] Compared with the prior art, the present invention has the following advantages: In the present invention, the projections of the axes of the first connecting hole and the mounting hole used to fix the first positioning block in the direction perpendicular to the first side do not coincide. Compared with the traditional structure in which the connecting hole is directly opposite the mounting hole, the first connecting hole in the present invention can be opened to a deeper depth while avoiding penetrating into the mounting hole, ensuring the roundness of the mounting hole and having better adaptability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the power tool holder of this utility model.

[0023] Figure 2 This is an exploded structural diagram of the power tool holder of this utility model.

[0024] Figure 3 This is a cross-sectional schematic diagram of the main body of the tool holder in this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Tool holder body; 110. First end face; 111. Mounting hole; 120. First side face; 121. First mounting groove; 122. First connecting hole; 130. Cylinder; 140. Second side face; 141. Second mounting groove; 142. Second connecting hole; 200. Drive shaft; 300. First positioning block; 310. Docking hole; 400. Locking bolt; 500. Second positioning block. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0028] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] Please see Figures 1 to 3As shown, a power tool holder corresponding to a preferred embodiment of the present invention includes: a tool holder body 100, including a first end face 110 and a first side face 120, the first end face 110 having a mounting hole 111, and the first side face 120 having a first mounting groove 121; a drive shaft 200 passing through the mounting hole 111; and a first positioning block 300 embedded in the first mounting groove 121; wherein, the bottom of the first mounting groove 121 has a first connecting hole 122 for fixing the first positioning block 300, and the projections of the axes of the first connecting hole 122 and the mounting hole 111 in the direction perpendicular to the first side face 120 do not coincide.

[0031] In this invention, the projections of the axes of the first connecting hole 122 and the mounting hole 111 used to fix the first positioning block 300 in the direction perpendicular to the first side 120 do not coincide. Compared with the traditional structure in which the connecting hole is directly opposite the mounting hole 111, in this invention, the first connecting hole 122 can be opened to a deeper depth while avoiding it penetrating into the mounting hole 111, thus ensuring the roundness of the mounting hole 111 and making it more adaptable.

[0032] Furthermore, the tool holder body 100 is rectangular, with the first side surface 120 and the first end face 110 perpendicularly connected. The first end face 110 is used to fit tightly against the tool turret (not shown) and is fixed to the tool turret by bolts. A cylindrical body 130 protrudes from the first end face 110, and the cylindrical body 130 and the tool holder body 100 can be integrally formed or assembled after being formed separately. The cylindrical body 130 surrounds the mounting hole 111 and is used to insert into the corresponding hole on the tool turret. Both ends of the cylindrical body 130 are open ends, and the drive shaft 200 passes through the cylindrical body 130. This is a known structure and will not be described in detail here.

[0033] Furthermore, the mounting hole 111 is recessed inward from the first end face 110, and its axis is perpendicular to the first end face 110. The center of the mounting hole 111 coincides with the center of the first end face 110. There are two first side faces 120, which are arranged opposite each other. The first side face 120 is the longer side, that is, it connects to the longer edge of the first end face 110. In one embodiment, each first side face 120 is provided with a first mounting groove 121. Preferably, in this embodiment, only a single first side face 120 is provided with a first mounting groove 121 to simplify the structure of the power tool holder.

[0034] The recessed direction of the first mounting groove 121 is perpendicular to the first side surface 120. The first connecting hole 122 is recessed inward from the bottom of the first mounting groove 121, and its axis is perpendicular to the first side surface 120. The first mounting groove 121 is arranged close to the first end face 110, and one side of it extends through the first end face 110 along the axis of the mounting hole 111, so that the first positioning block 300 installed in the first mounting groove 121 can protrude from the first end face 110, ensuring that it can be smoothly positioned to the turret later.

[0035] Preferably, there are at least two first connecting holes 122, which are respectively located on both sides of the axis of the mounting hole 111. The first positioning block 300 is provided with mating holes 310 corresponding to the first connecting holes 122. Both the first connecting holes 122 and the mating holes 310 are threaded holes, and a locking bolt 400 is connected between them. In this embodiment, the first mounting groove 121 has a first center line parallel to the axis of the mounting hole 111. The projection of the first center line and the axis of the mounting hole 111 in the direction perpendicular to the first side surface 120 coincides. There are two first connecting holes 122, which are symmetrically arranged on both sides of the first center line. By adopting the above structure, the first positioning block 300 can be stably installed while effectively reducing the number of first connecting holes 122.

[0036] Furthermore, the tool holder body 100 also includes two second side surfaces 140, which are arranged opposite to each other. The first end face 110, the first side surface 120, and the second side surface 140 are perpendicular to each other, and the second side surface 140 is connected to the first side surface 120 and the first end face 110, respectively. Preferably, a chamfer is provided between the first side surface 120 and the second side surface 140 to protect the tool holder body 100 and to facilitate its installation. The second side surface 140 is the shorter side, that is, it is connected to the shorter edge of the first end face 110.

[0037] In addition, the tool holder body 100 also includes a second positioning block 500. The second side 140 is provided with a second mounting groove 141 for the second positioning block 500 to be embedded. The bottom of the second mounting groove 141 is provided with a second connecting hole 142 for fixing the second positioning block 500. The projections of the axes of the second connecting hole 142 and the mounting hole 111 in the direction perpendicular to the second side 140 coincide.

[0038] Since the mounting hole 111 is a circular hole, the minimum distance from the first side 120 to the inner wall of the mounting hole 111 is less than the minimum distance from the second side 140 to the inner wall of the mounting hole 111. This makes it difficult for the connecting hole to penetrate into the mounting hole 111 when it is located on the second side 140. Therefore, the second connecting hole 142 and the mounting hole 111 can be arranged opposite each other, which allows the second mounting groove 141 and the second positioning block 500 to be smaller. That is, the dimension of the second mounting groove 141 in the direction perpendicular to the first side 120 is smaller than the dimension of the first mounting groove 121 in the direction perpendicular to the second side 140, thereby reducing costs and improving processing efficiency.

[0039] Furthermore, the recessed direction of the second mounting groove 141 is perpendicular to the second side surface 140, and the second connecting hole 142 is recessed inward from the bottom of the second mounting groove 141, with its axis perpendicular to the second side surface 140. The second mounting groove 141 is arranged close to the first end face 110, and one side of it extends through the first end face 110 along the axis of the mounting hole 111, so that the second positioning block 500 installed in the second mounting groove 141 can protrude from the first end face 110, ensuring that it can be smoothly positioned to the turret later.

[0040] Preferably, in this embodiment, the second mounting groove 141 has a second center line parallel to the axis of the mounting hole 111. The projection of the second center line and the axis of the mounting hole 111 in a direction perpendicular to the second side surface 140 coincides. There is one second connecting hole 142, located at the center of the second mounting groove 141. Preferably, each second side surface 140 is provided with a second mounting groove 141, and the second positioning block 500 corresponds one-to-one with the second mounting groove 141. The mounting structure of the second positioning block 500 is the same as that of the first positioning block 300, and will not be described again here.

[0041] Furthermore, both the first connecting hole 122 and the second connecting hole 142 are blind holes to avoid damaging the roundness of the mounting hole 111 during processing. Preferably, the dimension of the second mounting groove 141 along the direction perpendicular to the first side surface 120 is smaller than the dimension of the first mounting groove 121 along the direction perpendicular to the second side surface 140, so as to improve processing efficiency.

[0042] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A power tool holder, characterized in that, include: The tool holder body (100) includes a first end face (110) and a first side face (120). The first end face (110) is provided with a mounting hole (111), and the first side face (120) is provided with a first mounting groove (121). A drive shaft (200) passes through the mounting hole (111); The first positioning block (300) is embedded in the first mounting groove (121); The first mounting groove (121) has a first connecting hole (122) at the bottom for fixing the first positioning block (300). The projections of the axes of the first connecting hole (122) and the mounting hole (111) in the direction perpendicular to the first side surface (120) do not coincide.

2. The power knife as claimed in claim 1, wherein, The number of the first connecting holes (122) is at least two, and they are respectively located on both sides of the axis of the mounting hole (111).

3. The power knife as claimed in claim 2, wherein, The first mounting groove (121) has a first center line parallel to the axis of the mounting hole (111). The projection of the first center line and the axis of the mounting hole (111) in a direction perpendicular to the first side surface (120) coincides. There are two first connecting holes (122), which are symmetrically arranged on both sides of the first center line.

4. The power knife as claimed in claim 1, wherein, The main body (100) of the tool holder is rectangular and includes a second side surface (140). The first end face (110), the first side surface (120) and the second side surface (140) are perpendicular to each other. The first side (120) is the long side, the second side (140) is the short side, and the center of the mounting hole (111) coincides with the center of the first end face (110).

5. The power knife as claimed in claim 4, wherein, There are two first side surfaces (120) arranged opposite each other. Each first side surface (120) is provided with a first mounting groove (121), or only a single first side surface (120) is provided with the first mounting groove (121).

6. The power knife as claimed in claim 4, wherein, The tool holder body (100) includes a second positioning block (500). The second side (140) is provided with a second mounting groove (141) for the second positioning block (500) to be embedded. The bottom of the second mounting groove (141) is provided with a second connecting hole (142) for fixing the second positioning block (500). The projections of the axes of the second connecting hole (142) and the mounting hole (111) in the direction perpendicular to the second side (140) coincide.

7. The power knife as claimed in claim 6, wherein, The second mounting groove (141) has a second center line parallel to the axis of the mounting hole (111), the second center line coincides with the projection of the axis of the mounting hole (111) in a direction perpendicular to the second side surface (140), and the number of the second connecting holes (142) is one, and it is located at the center of the second mounting groove (141).

8. The power knife as claimed in claim 6, wherein, There are two second side surfaces (140) arranged opposite each other, and each second side surface (140) is provided with a second mounting groove (141).

9. The power knife as claimed in claim 6, wherein, Both the first connecting hole (122) and the second connecting hole (142) are blind holes.

10. The power knife as claimed in claim 6, wherein, The second mounting groove (141) has a dimension in a direction perpendicular to the first side surface (120) that is smaller than a dimension of the first mounting groove (121) in a direction perpendicular to the second side surface (140).

Images