A positioning device for a metal cutting tool

Abstract

The utility model belongs to cutting tool positioning field, concretely relates to a kind of positioning device of metal cutting tool, including tool and positioning assembly, including the tool holder for fixing tool, the positioning screw rod being penetrated through tool holder top and being with its screw joint and being located in the side wall of fixed tool tool;Auxiliary positioning assembly, including the first driving part being installed in the side surface of tool holder, the auxiliary positioning part being connected in the side surface of first driving part and the first guide part being set between auxiliary positioning part and tool holder;Pad height subassembly, including the second driving part being installed in the inside of tool holder, the pad being connected in the end of second driving part.This utility model, first screw rod moves to inside axial motion when rotating in screw groove and drives driving block axial motion by first bearing, driving block axial motion drives auxiliary positioning plate axial motion by connecting plate, when auxiliary positioning plate moves to the side surface of tool, it can extrude tool from side, so that auxiliary positioning can be carried out to tool and stability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of cutting tool positioning, and specifically relates to a positioning device for metal cutting tools. Background Technology

[0002] The positioning device for metal cutting tools is a key component that ensures the tool maintains a precise position and stability during machining. The main function of the positioning device is to fix and position the tool, ensuring the positional accuracy and stability of the tool during machining, thereby improving machining quality and efficiency. Through the contact or engagement of the positioning element with the corresponding positioning reference surface on the tool or workpiece, the position of the tool in the fixture is accurately determined.

[0003] Existing metal cutting tool positioning devices often rely solely on the clamping action of a positioning screw to fix the tool position during assembly. However, this single fixing method is prone to problems such as screw loosening and slight tool displacement under prolonged cutting or large cutting forces, leading to unstable positioning and consequently affecting machining accuracy and tool life.

[0004] In view of this, the present invention provides a positioning device for metal cutting tools to solve the problem that the screw is prone to loosening and the tool is unstable when the screw is cutting for a long time. Utility Model Content

[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning device for a metal cutting tool, comprising a tool and a positioning assembly, including a tool holder for fixing the tool, a positioning screw that penetrates the top of the tool holder and is threadedly connected thereto, and a tool disposed on the side wall of the tool holder.

[0006] The auxiliary positioning assembly includes a first driving part mounted on the side surface of the tool holder, an auxiliary positioning part connected to the side surface of the first driving part, and a first guide part disposed between the auxiliary positioning part and the tool holder;

[0007] The shim assembly includes a second drive unit installed inside the tool holder, a pad connected to the end of the second drive unit, and a second guide unit disposed between the pad and the tool holder.

[0008] As a preferred positioning device for a metal cutting tool according to the present invention, the first driving part includes a driving block fitted into the side wall of the tool holder, a first bearing fitted into the drive block, a first screw connected through the first bearing, and a threaded groove formed inside the tool holder and threadedly connected to the first screw.

[0009] As a preferred positioning device for a metal cutting tool according to the present invention, the auxiliary positioning part includes a connecting plate connected to both sides of the driving block, and an auxiliary positioning plate respectively connected to the top of the connecting plate.

[0010] As a preferred positioning device for a metal cutting tool according to the present invention, the first guide portion includes guide rods respectively connected to the side surfaces of two connecting plates and two guide grooves formed on the side surface of the tool holder and adapted to the dimensions of the two guide rods respectively.

[0011] As a preferred positioning device for a metal cutting tool according to the present invention, the second driving part includes a second bearing fitted and mounted on the side surface of the tool holder, a crossbar penetrating the interior of the second bearing, a driving bevel gear connected to the surface of the crossbar, a third bearing fitted and mounted on the surface of the tool holder, a second screw penetrating and connected to the interior of the third bearing, a driven bevel gear connected to the end of the second screw and meshing with the driving bevel gear, and a threaded hole opened on the surface of the pad and threadedly connected to the second screw.

[0012] As a preferred positioning device for a metal cutting tool according to this utility model, the driving bevel gear, the third bearing, the second screw, the driven bevel gear, and the threaded hole are symmetrically arranged on both sides of the pad.

[0013] As a preferred positioning device for a metal cutting tool according to the present invention, the second guide portion includes a wedge-shaped slider connected to the surface of the tool holder and grooves formed on both sides of the inner wall of the pad and adapted to the shape of the slider.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, when the first screw rotates inside the threaded groove, it moves axially inward. The axial movement of the first screw drives the drive block to move axially through the first bearing. When the drive block moves axially, it drives the auxiliary positioning plate to move axially through the connecting plate. When the auxiliary positioning plate moves to the side surface of the tool, it can squeeze the tool from the side, thereby assisting in positioning the tool and improving the stability of the tool after assembly.

[0016] In this invention, when the crossbar rotates, it drives the active bevel gear to rotate, which in turn drives the second screw to rotate through the driven bevel gear. When the second screw rotates, it drives the pad to move longitudinally through the threaded hole, thereby adjusting the height of the pad. This facilitates the adjustment of the tool positioning height and improves the flexibility of the positioning device. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2This is a schematic diagram of the cross-sectional connection structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the auxiliary positioning component and the elevation component of this utility model;

[0021] Figure 4 This is a partial structural cross-sectional view of the first drive unit of this utility model;

[0022] Figure 5 This is a cross-sectional view of the connection structure of the elevation component of this utility model.

[0023] In the diagram: 100, cutting tool and positioning assembly; 101, tool holder; 102, positioning screw; 103, cutting tool; 200, auxiliary positioning assembly; 201, first drive unit; 2011, drive block; 2012, first bearing; 2013, first screw; 2014, threaded groove; 202, auxiliary positioning unit; 2021, connecting plate; 2022, auxiliary positioning plate; 203, first guide unit; 2031, guide rod; 2032, guide groove; 300, shim assembly; 301, second drive unit; 3011, second bearing; 3012, crossbar; 3013, driving bevel gear; 3014, third bearing; 3015, second screw; 3016, driven bevel gear; 3017, threaded hole; 302, pad block; 303, second guide unit; 3031, slider; 3032, slide groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] This utility model relates to a positioning device for metal cutting tools, such as... Figures 1-4 As shown, it includes a cutting tool and a positioning assembly 100, including a tool holder 101 for fixing the cutting tool 103, a positioning screw 102 that passes through the top of the tool holder 101 and is threadedly connected to it, and the cutting tool 103 disposed on the side wall of fixing the cutting tool 103.

[0027] The auxiliary positioning assembly 200 includes a first driving part 201 mounted on the side surface of the tool holder 101, an auxiliary positioning part 202 connected to the side surface of the first driving part 201, and a first guide part 203 disposed between the auxiliary positioning part 202 and the tool holder 101.

[0028] The first drive unit 201 includes a drive block 2011 fitted into the side wall of the tool holder 101, a first bearing 2012 fitted into the drive block 2011, a first screw 2013 penetrating into the first bearing 2012, and a threaded groove 2014 formed inside the tool holder 101 and threadedly connected to the first screw 2013. After the tool 103 is fixed by the positioning screw 102, the first screw 2013 is rotated by an Allen wrench. While rotating inside the threaded groove 2014, the first screw 2013 can move axially inward. The axial movement of the first screw 2013 can drive the drive block 2011 to move axially through the first bearing 2012, thereby adjusting the position of the drive block 2011.

[0029] Furthermore, the auxiliary positioning unit 202 includes connecting plates 2021 connected to both sides of the drive block 2011, and auxiliary positioning plates 2022 respectively connected to the top of the connecting plates 2021. When the drive block 2011 moves axially, the auxiliary positioning plates 2022 can be driven to move axially through the connecting plates 2021, thereby pressing the tool 103 from the side through the auxiliary positioning plates 2022, thereby assisting in the positioning of the tool 103.

[0030] Furthermore, the first guide portion 203 includes guide rods 2031 respectively connected to the side surfaces of the two connecting plates 2021, and two guide grooves 2032 formed on the side surface of the tool holder 101 and adapted to the dimensions of the two guide rods 2031. When the connecting plate 2021 moves axially, it can drive the guide rods 2031 to slide inside the guide grooves 2032, which can limit the movement direction of the connecting plate 2021 and maintain the stability of the movement of the connecting plate 2021.

[0031] In use, after the tool 103 is positioned, the first screw 2013 is rotated by an Allen wrench. When the first screw 2013 rotates inside the threaded groove 2014, it moves axially inward. The axial movement of the first screw 2013 drives the drive block 2011 to move axially through the first bearing 2012. When the drive block 2011 moves axially, it drives the auxiliary positioning plate 2022 to move axially through the connecting plate 2021. When the auxiliary positioning plate 2022 moves to the side surface of the tool 103, it can squeeze the tool 103 from the side, thereby assisting in positioning the tool 103.

[0032] Example 2

[0033] like Figure 5 The second embodiment of the present invention is shown, which differs from the first embodiment described above only in that: the shim assembly 300 includes a second drive part 301 installed inside the tool holder 101, a pad 302 connected to the end of the second drive part 301, and a second guide part 303 disposed between the pad 302 and the tool holder 101.

[0034] The second drive unit 301 includes a second bearing 3011 fitted onto the side surface of the tool holder 101, a crossbar 3012 penetrating the interior of the second bearing 3011, a drive bevel gear 3013 connected to the surface of the crossbar 3012, a third bearing 3014 fitted onto the surface of the tool holder 101, a second screw 3015 penetrating the interior of the third bearing 3014, a driven bevel gear 3016 connected to the end of the second screw 3015 and meshing with the drive bevel gear 3013, and a threaded hole 3017 formed on the surface of the pad 302 and threadedly connected to the second screw 3015.

[0035] Furthermore, the driving bevel gear 3013, the third bearing 3014, the second screw 3015, the driven bevel gear 3016, and the threaded hole 3017 are symmetrically arranged on both sides of the pad 302. Rotating the crossbar 3012 with an Allen wrench drives the driving bevel gear 3013 to rotate. When the driving bevel gear 3013 rotates, it drives the driven bevel gear 3016 to rotate through the meshing structure. When the driven bevel gear 3016 rotates, it drives the second screw 3015 to rotate inside the third bearing 3014. When the second screw 3015 rotates, it drives the pad 302 to move longitudinally through its threaded connection with the threaded hole 3017, thereby adjusting the height of the pad 302.

[0036] Furthermore, the second guide portion 303 includes a wedge-shaped slider 3031 connected to the surface of the tool holder 101 and grooves 3032 formed on both sides of the inner wall of the pad 302 and adapted to the shape of the slider 3031. When the pad 302 moves axially, it can drive the grooves 3032 to slide on the surface of the slider 3031, which can limit the movement direction of the pad 302 and maintain the stability of the movement of the pad 302.

[0037] In use, the crossbar 3012 is rotated by the Allen wrench, which drives the drive bevel gear 3013 to rotate. When the drive bevel gear 3013 rotates, it drives the second screw 3015 to rotate through the driven bevel gear 3016. When the second screw 3015 rotates, it drives the pad 302 to move longitudinally through the threaded hole 3017, thereby adjusting the height of the pad 302 and thus facilitating the adjustment of the positioning height of the tool 103.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A positioning device for a metal cutting tool, characterized in that, include: The cutting tool and positioning assembly (100) includes a tool holder (101) for fixing the cutting tool (103), a positioning screw (102) that passes through the top of the tool holder (101) and is threadedly connected thereto, and the cutting tool (103) located on the side wall of fixing the cutting tool (103). The auxiliary positioning assembly (200) includes a first driving part (201) mounted on the side surface of the tool holder (101), an auxiliary positioning part (202) connected to the side surface of the first driving part (201), and a first guide part (203) disposed between the auxiliary positioning part (202) and the tool holder (101). The shim assembly (300) includes a second drive unit (301) installed inside the tool holder (101), a pad (302) connected to the end of the second drive unit (301), and a second guide unit (303) disposed between the pad (302) and the tool holder (101).

2. The positioning device for a metal cutting tool according to claim 1, characterized in that: The first drive unit (201) includes a drive block (2011) fitted into the side wall of the tool holder (101), a first bearing (2012) fitted into the drive block (2011), a first screw (2013) passing through the first bearing (2012), and a threaded groove (2014) formed inside the tool holder (101) and threadedly connected to the first screw (2013).

3. The positioning device for a metal cutting tool according to claim 2, characterized in that: The auxiliary positioning unit (202) includes a connecting plate (2021) connected to both sides of the drive block (2011), and an auxiliary positioning plate (2022) respectively connected to the top of the connecting plate (2021).

4. The positioning device for a metal cutting tool according to claim 3, characterized in that: The first guide part (203) includes guide rods (2031) respectively connected to the side surfaces of the two connecting plates (2021) and two guide grooves (2032) opened on the side surface of the tool holder (101) and adapted to the size of the two guide rods (2031).

5. The positioning device for a metal cutting tool according to claim 1, characterized in that: The second drive unit (301) includes a second bearing (3011) fitted onto the side surface of the tool holder (101), a crossbar (3012) penetrating the interior of the second bearing (3011), a drive bevel gear (3013) connected to the surface of the crossbar (3012), a third bearing (3014) fitted onto the surface of the tool holder (101), a second screw (3015) penetrating and connected to the interior of the third bearing (3014), a driven bevel gear (3016) connected to the end of the second screw (3015) and meshing with the drive bevel gear (3013), and a threaded hole (3017) formed on the surface of the pad (302) and threadedly connected to the second screw (3015).

6. The positioning device for a metal cutting tool according to claim 5, characterized in that: The driving bevel gear (3013), the third bearing (3014), the second screw (3015), the driven bevel gear (3016), and the threaded hole (3017) are symmetrically arranged on both sides of the pad (302).

7. A positioning device for a metal cutting tool according to claim 6, characterized in that: The second guide (303) includes a wedge-shaped slider (3031) connected to the surface of the tool holder (101) and a groove (3032) formed on both sides of the inner wall of the pad (302) and adapted to the shape of the slider (3031).

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