Edge trimmer with adjustable guide cutting stroke
By using a trimmer with adjustable cutting depth and stroke, and by employing components such as threaded guide posts and parallel guide posts, the cutting depth of electric woodworking tools can be automatically adjusted and locked. This solves the shortcomings of manual adjustment in existing technologies and improves the automation level of woodworking operations.
Patent Information
- Application Number
- CN202520116734.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-18
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-18
AI Technical Summary
Existing electric woodworking tools are difficult to automate the cutting depth and angle adjustment of the cutting head when faced with complex and diverse woodworking tasks, requiring manual adjustment.
An adjustable guide cutting depth trimmer is designed, comprising a housing, an adjustable base, a guide assembly, an adjustment assembly, and an output assembly. Through the combination of a threaded guide post, a parallel guide post, a spring guide rod, and a guide sleeve, the cutting depth can be automatically adjusted and locked.
It enables stable adjustment and locking of cutting depth, improves the automation level of woodworking, and reduces the need for manual adjustment.
Smart Images
Figure CN223643869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bakelite tools, and in particular to an edge trimmer with adjustable guide depth of cut. Background Technology
[0002] Power tools for wood trimming and grooving, also known as electric wood milling machines, are processing devices that use high-speed rotating milling cutters to cut wood into the required shapes. However, they cannot completely replace hand tools. For many woodworking tasks, such as trimming, leveling, and grooving, manual adjustment of the cutting head's cutting stroke is required to adapt to different working heights and angles when facing complex and diverse application environments. Therefore, a trimming device is needed that allows the base to move up or down relative to the cutting head, thereby raising or lowering the cutting head and changing the cutting depth. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a trimmer with stable guidance and adjustable cutting depth and stroke.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a trimmer with adjustable guide depth of cut, comprising a housing, a base with an adjustable distance from the housing, and a guide assembly, the guide assembly comprising a threaded guide post, a parallel guide post, a spring guide rod, and a guide sleeve, the spring guide rod and the guide sleeve being limited on the housing, the top of the threaded guide post and the parallel guide post being limited by contact with the spring guide rod, and the bottom being limited by contact with the base, and both being fitted into the guide sleeve for unobstructed sliding; an adjustment assembly, the adjustment assembly comprising a locking half nut and a depth of cut adjustment button, the locking half nut being threadedly engaged with the threaded guide post, and the depth of cut adjustment button being able to drive the threaded guide post to synchronously rotate forward and backward; and an output assembly, which is limited on the housing.
[0005] Preferably, the spring guide rod further includes a limiting rod, a first limiting piece, a second limiting piece, a retaining ring, and a guide spring; the first limiting piece is engaged in a first slot for limitation, the second limiting piece and the retaining ring are both engaged in a second slot for limitation, the limiting rod passes through the first slot and the second slot and is embedded inside the threaded guide post and the parallel guide post, the guide spring is sleeved on the limiting rod, its upper end is limited by the retaining ring located below the second limiting piece, and its lower end is limited by the upper surface of the base.
[0006] Preferably, it further includes a threaded guide post locking assembly, a parallel guide post locking assembly, an output shaft locking assembly, and an adjustable button limiting assembly; the threaded guide post locking assembly is used to lock the threaded guide post, the parallel guide post locking assembly is used to lock the parallel guide post, the output shaft locking assembly is used to lock the output assembly, and the adjustable button limiting assembly is used to limit the depth of cut adjustment button.
[0007] Preferably, the threaded guide post locking assembly includes an unlocking knob and a locking spring; the locking half nut is fixed to the unlocking knob by a screw, and the unlocking knob is provided with an arc-shaped groove that provides displacement space, so that by pressing the unlocking knob to a set position, the threaded part of the locking half nut can be pushed away from the threaded part of the threaded guide post, and the locking spring is used to reset the locking half nut after it has been pushed away.
[0008] Preferably, the parallel guide post locking assembly includes a knob and an abutment rod; the knob is disposed on the outside of the housing, the abutment rod passes through the housing and can move relative to the housing by rotating the knob in both directions, and the abutment rod abuts and limits the movement of the parallel guide post.
[0009] Preferably, the output shaft locking assembly includes a button, a limiting plate, and a locking spring; the button is located on the outside of the housing, the limiting plate passes through the housing and is connected to the button, and the limiting plate is provided with a locking groove, which can be locked by pressing the button and embedding the locking groove into the output shaft; the locking spring is used to reset the button.
[0010] Preferably, the adjustable button limiting assembly includes a steel ball and an ejector spring; the ejector spring is disposed in the ejector hole of the base, the steel ball is disposed on the top of the ejector spring, and the bottom circumferential arrangement of the cutting depth adjustment button is provided with slots to accommodate the steel ball, and the steel ball can be pushed into the slots by the ejector spring and limited.
[0011] Preferably, the base further includes an upper base and a lower base; the upper base is provided with an opening, a guide ruler fixing hole and a ruler groove, the scale caliper is set in the ruler groove and the positioning scale is observed through the opening, and the lower base is provided with a guide ruler below.
[0012] Preferably, it also includes a guide screw knob disposed on the guide screw hole, and a pressing spring is provided below the guide screw knob to prevent loosening when the scale caliper is not needed.
[0013] Preferably, the housing further includes a knob limiting groove and a guide sleeve limiting groove; the unlocking knob is limited within the knob limiting groove, and the guide sleeve is limited within the guide sleeve limiting groove.
[0014] The beneficial effects of this utility model are as follows: First, by setting the adjustment component, the cutting depth can be adjusted; second, by setting the guide component, the up and down adjustment can be stably guided; and third, by setting the locking component, the cutting depth can be locked at different depths during the cutting depth adjustment. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the trimmer with adjustable guide depth of cut according to this utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of the trimmer with adjustable guide depth of cut according to this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the spring guide rod described in this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the shell described in this utility model;
[0019] Figure 5 This is a schematic diagram of the unlocking knob described in this utility model;
[0020] Figure 6 This is a schematic diagram of the structure of the upper base described in this utility model;
[0021] Figure 7 This is a schematic diagram of the cutting depth adjustment button described in this utility model;
[0022] Figure 8 This is a schematic diagram of the output shaft locking assembly described in this utility model. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this utility model, not all embodiments. Example 1
[0024] Reference Figure 1-8 The illustration shows an edge trimmer with adjustable guide cutting depth stroke proposed in this embodiment, including a housing 100, a base 200, a guide component 300, an adjustment component 400, and an output component 500. The housing 100 consists of two semi-open housings. The guide component 300, the adjustment component 400, and the output component 500 are all located within the housing 100 and are fixedly installed. It is easy to understand that the distance between the base 200 and the housing 100 is adjustable, that is, the cutting depth is adjustable, and the stroke between the output shaft of the output component 500 and the base 200 is adjustable.
[0025] To achieve adjustable cutting depth of the trimmer in this embodiment, more specifically, the guide assembly 300 includes a threaded guide post 301, a parallel guide post 302, a spring guide rod 303, and a guide sleeve 304. The spring guide rod 303 and guide sleeve 304 are positioned on the housing 100. The tops of the threaded guide post 301 and the parallel guide post 302 are positioned against the spring guide rod 303, and their bottoms are positioned against the base 200. Both are fitted into the guide sleeve 304 and slide without resistance. In simpler terms, the spring guide rod 303 and guide sleeve 304 are fixedly installed on the housing 100. The sliding of the threaded guide post 301 and the parallel guide post 302 within the guide sleeve 304 represents the relative displacement between the bottom of the threaded guide post 301 and the base 200 and the housing 100. The output assembly 500 is fixedly installed on the housing 100, thus achieving adjustable cutting depth of the device.
[0026] It should be noted that in this embodiment, the threaded guide post 301 and the parallel guide post 302 are symmetrically arranged at the position of the housing 100. The threaded guide post 301 has threads on its surface, while the surface of the parallel guide post 302 is smooth. At the same time, a bearing connection is provided between the bottom of the threaded guide post 301 and the base 200, that is, the threaded guide post 301 can rotate on its axis, while the parallel guide post 302 is fixedly connected to the base 200. Smooth sliding is achieved through double guide rods, double guide sleeves, and double springs.
[0027] Refer again Figure 3 More specifically, the spring guide rod 303 also includes a limiting rod 303a, a first limiting piece 303b, a second limiting piece 303c, a retaining ring 303d, and a guide spring 303e; wherein the first limiting piece 303b is inserted into the first slot 101 for limitation, the second limiting piece 303c and the retaining ring 303d are both inserted into the second slot 102 for limitation, the limiting rod 303a passes through the first slot 101 and the second slot 102 and is embedded inside the threaded guide post 301 and the parallel guide post 302, and the guide spring 303e is sleeved on the limiting rod 303a, the upper end of which is limited by the retaining ring 303d located below the second limiting piece 303c, and the lower end is limited by the upper surface of the base 200.
[0028] Meanwhile, the housing 100 also includes a knob limiting groove 103 and a guide sleeve limiting groove 104, wherein the unlocking knob 601 is limited within the knob limiting groove 103, and the guide sleeve 304 is limited within the guide sleeve limiting groove 104.
[0029] Furthermore, the adjustment assembly 400 includes a locking half-nut 401 and a cutting depth adjustment button 402. The locking half-nut 401 is threadedly engaged with the threaded guide post 301, and the cutting depth adjustment button 402 can drive the threaded guide post 301 to rotate synchronously in both directions. By manually turning the cutting depth adjustment button 402, the threaded guide post 301 is rotated. Since the locking half-nut 401 is threadedly engaged with the threaded guide post 301 and fixed to the housing 100, when the threaded guide post 301 rotates, the threaded movement causes relative displacement between the threaded guide post 301 and the locking half-nut 401. That is, relative displacement occurs between the base 200 connected to the bottom of the threaded guide post 301 and the housing 100, thereby realizing the adjustment of the cutting depth of the device.
[0030] The output component 500, which is limited on the housing 100, includes a clamp and a cutting head. Cutting is achieved by rotating the output shaft via a motor. Similarly, it should be noted in this embodiment that for an edge trimmer with adjustable guide cutting depth stroke, it is easy to understand that it also includes electronic components required for the cutting scheme to achieve the final cutting, such as switches, power supplies, power display blocks, controller circuits, motors, cutting heads, etc. Refer to the illustrations in this embodiment. Furthermore, the above-mentioned technical means are existing and very mature technologies, and those skilled in the art can fully implement them by referring to existing technologies. This embodiment focuses on the structure; the implementation of its electrical principles is not a necessary technical feature and therefore will not be described in detail here.
[0031] Furthermore, to achieve locking of the trimmer with adjustable guide depth stroke in this embodiment during stroke adjustment, this embodiment also includes a threaded guide post locking assembly 600, a parallel guide post locking assembly 700, an output shaft locking assembly 800, and an adjustable button limit assembly 900.
[0032] Specifically, the threaded guide post locking assembly 600 is used to lock the threaded guide post 301, the parallel guide post locking assembly 700 is used to lock the parallel guide post 302, the output shaft locking assembly 800 is used to lock the output assembly 500, and the adjustable button limit assembly 900 is used to limit the depth of cut adjustment button 402.
[0033] More specifically, the threaded guide post locking assembly 600 includes an unlocking knob 601 and a locking spring 602; the locking half nut 401 is fixed to the unlocking knob 601 by screws, and the unlocking knob 601 is provided with an arc-shaped groove that provides displacement space. By pressing the unlocking knob 601 to a set position, the threaded part of the locking half nut 401 is pushed away from the threaded part of the threaded guide post 301. The locking spring 602 is used to reset the locking half nut 401 after it is pushed away.
[0034] The parallel guide post locking assembly 700 includes a knob 701 and an abutment rod 702; wherein the knob 701 is disposed on the outside of the housing 100, and the abutment rod 702 passes through the housing 100 and can move relative to the housing 100 by rotating the knob 701 in both directions, and the abutment rod 702 abuts and limits the movement with respect to the parallel guide post 302.
[0035] The output shaft locking assembly 800 includes a button 801, a limiting plate 802, and a locking spring 803. The button 801 is located on the outside of the housing 100. The limiting plate 802 passes through the housing 100 and connects to the button 801. The limiting plate 802 has a locking groove 802a, which can be engaged and locked onto the output shaft 501 by pressing the button 801. The locking spring 803 is used to reset the button 801. The front end of the limiting plate 802 has a protrusion for mounting the locking spring 803. The middle of the limiting plate 802 has an arc-shaped hole and a flat square groove corresponding to the position of the output shaft. The locking spring 803 pushes the center of the arc-shaped hole of the limiting plate 802 to the center of the output shaft. When the button 801 is pressed to the set position, the flat square groove of the limiting plate 802 accommodates the flat square of the output shaft and prevents it from rotating, thus achieving shaft locking.
[0036] The adjustable button limiting assembly 900 includes a steel ball 901 and an ejector spring 902. The ejector spring 902 is disposed within the ejector hole 201 of the base 200, and the steel ball 901 is disposed on top of the ejector spring 902. The bottom of the depth-of-cut adjustment button 402 has circumferentially arranged slots 402a for accommodating the steel ball 901, allowing the steel ball 901 to be pushed into and limited within the slots 402a by the ejector spring 902. The lower part of the depth-of-cut adjustment button 402 has a ring of evenly distributed spherical grooves. The base 200 has slots for accommodating the steel ball 901 and the ejector spring 902. When the depth-of-cut adjustment button 402 is rotated to stop, the ejector spring 902 pushes the steel ball 901 into the lower spherical grooves of the depth-of-cut adjustment button 402 for limitation.
[0037] In this embodiment, the base 200 further includes an upper base 202 and a lower base 203. The upper base 202 has an opening 202a, a guide scale fixing hole 202b, and a scale groove 202c. The scale caliper 204 is set in the scale groove 202c and the positioning scale is observed through the opening 202a. A guide scale 205 is provided below the lower base 203. A guide scale screw knob 206 is provided on the guide scale fixing hole 202b. A pressing spring 206a is provided below the guide scale screw knob 206 to prevent loosening when the scale caliper 204 is not needed. When the device does not need the scale caliper 204, the upper base 202 and the lower base 203 are fastened by pressing the guide scale screw knob 206 to prevent loosening between them.
[0038] This embodiment presents the following usage process for an adjustable guide cutting depth trimmer: When adjusting the cutting depth, first rotate knob 701 until the contact rod 702 is no longer in contact with the parallel guide post 302. At this time, the parallel guide post 302 can slide freely on the guide sleeve 304. Then, release the unlocking knob 601, allowing the threaded part of the locking half nut 401 to engage with the threaded part of the threaded guide post 301. Rotate the cutting depth adjustment button 402 to move the threaded guide post 301 up or down by reversing the rotation. To achieve depth adjustment, when the desired depth is reached, rotate knob 701 until the contact rod 702 contacts the parallel guide post 302. At this point, the parallel guide post 302 cannot slide freely on the guide sleeve 304, thus locking the depth. Pressing the unlock knob 601 to the set position pushes the threaded part of the locking half nut 401 away from the threaded part of the threaded guide post 301. There is no threaded engagement between the locking half nut 401 and the threaded guide post 301, so even when rotating the cutting depth adjustment button 402, the cutting depth cannot be adjusted, thus locking the depth adjustment. When adjustment is needed, repeat the above process. In this embodiment, when the guide cutting depth adjustable trimmer is not in use, pressing button 801 locks the output shaft, which is safe and quick.
[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit the scope of protection of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description and ideas. It is neither necessary nor possible to exhaustively describe all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the technical solution of this utility model should be covered within the scope of protection of the claims of this utility model.
Claims
1. A trimmer with adjustable guide depth of cut, characterized in that: Includes a housing (100), a base (200) with an adjustable distance from the housing (100), and also includes, The guide assembly (300) includes a threaded guide post (301), a parallel guide post (302), a spring guide rod (303), and a guide sleeve (304). The spring guide rod (303) and the guide sleeve (304) are positioned on the housing (100). The top of the threaded guide post (301) and the parallel guide post (302) are in contact with the spring guide rod (303) and the bottom is positioned with the base (200). Both of them slide freely inside the guide sleeve (304). An adjustment assembly (400) includes a locking half nut (401) and a cutting depth adjustment button (402). The locking half nut (401) is threadedly engaged with the threaded guide post (301), and the cutting depth adjustment button (402) can drive the threaded guide post (301) to rotate synchronously in both forward and reverse directions. The output component (500) is positioned on the housing (100).
2. The trimmer with adjustable guide depth of cut according to claim 1, characterized in that: The spring guide rod (303) also includes a limiting rod (303a), a first limiting piece (303b), a second limiting piece (303c), a retaining ring (303d), and a guide spring (303e). The first limiting piece (303b) is inserted into the first slot (101) for limitation, the second limiting piece (303c) and the retaining ring (303d) are both inserted into the second slot (102) for limitation, the limiting rod (303a) passes through the first slot (101) and the second slot (102) and is embedded inside the threaded guide post (301) and the parallel guide post (302), the guide spring (303e) is sleeved on the limiting rod (303a), its upper end is limited by the retaining ring (303d) set below the second limiting piece (303c), and its lower end is limited by the upper surface of the base (200).
3. The trimmer with adjustable guide depth of cut according to claim 1, characterized in that: It also includes a threaded guide post locking assembly (600), a parallel guide post locking assembly (700), an output shaft locking assembly (800), and an adjustable button limit assembly (900). The threaded guide post locking assembly (600) is used to lock the threaded guide post (301), the parallel guide post locking assembly (700) is used to lock the parallel guide post (302), the output shaft locking assembly (800) is used to lock the output assembly (500), and the adjustable button limiting assembly (900) is used to limit the depth of cut adjustment button (402).
4. The trimmer with adjustable guide depth of cut according to claim 3, characterized in that: The threaded guide post locking assembly (600) includes an unlocking knob (601) and a locking spring (602). The locking half nut (401) is fixed to the unlocking knob (601) by screws. The unlocking knob (601) is provided with an arc-shaped groove that provides displacement space. By pressing the unlocking knob (601) to a set position, the threaded part of the locking half nut (401) can be pushed away from the threaded part of the threaded guide post (301). The locking spring (602) is used to reset the locking half nut (401) after it is pushed away.
5. The trimmer with adjustable guide depth of cut according to claim 3, characterized in that: The parallel guide post locking assembly (700) includes a knob (701) and an abutment rod (702). The knob (701) is located on the outside of the housing (100). The abutment rod (702) passes through the housing (100) and can move relative to the housing (100) by rotating the knob (701) in both directions. The abutment rod (702) abuts and is limited by the parallel guide post (302).
6. The trimmer with adjustable guide depth of cut according to claim 3, characterized in that: The output shaft locking assembly (800) includes a button (801), a limiting plate (802), and a locking spring (803). The button (801) is located on the outside of the housing (100). The limiting plate (802) passes through the housing (100) and is connected to the button (801). The limiting plate (802) is provided with a locking groove (802a), which can be locked by pressing the button (801) and embedding the locking groove (802a) into the output shaft (501). The locking shaft spring (803) is used to reset the button (801).
7. The trimmer with adjustable guide depth of cut according to claim 3, characterized in that: The adjustable button limit assembly (900) includes a steel ball (901) and an ejection spring (902). The ejector spring (902) is disposed in the ejector hole (201) of the base (200), the steel ball (901) is disposed on the top of the ejector spring (902), and the bottom circumference of the cutting depth adjustment button (402) is provided with a groove (402a) for accommodating the steel ball (901). The steel ball (901) can be pushed into the groove (402a) by the ejector spring (902) and limited.
8. The trimmer with adjustable guide depth of cut according to claim 1, characterized in that: The base (200) also includes an upper base (202) and a lower base (203); The upper base (202) is provided with an opening (202a), a guide ruler fixing hole (202b) and a ruler groove (202c). The scale caliper (204) is set in the ruler groove (202c) and the positioning scale is observed through the opening (202a). The lower base (203) is provided with a guide ruler (205) below it.
9. The trimmer with adjustable guide depth of cut according to claim 8, characterized in that: It also includes a guide screw knob (206) provided on the guide screw fixing hole (202b), and a pressing spring (206a) below the guide screw knob (206) to prevent loosening when the scale caliper (204) is not needed.
10. The trimmer with adjustable guide depth of cut according to claim 4, characterized in that: The housing (100) further includes a knob limiting groove (103) and a guide sleeve limiting groove (104); the unlocking knob (601) is limited in the knob limiting groove (103), and the guide sleeve (304) is limited in the guide sleeve limiting groove (104).