A lathe
By designing a counterweight device with sliding grooves and bolts on the lathe chuck, stepless adjustment of the lathe counterweight is achieved, solving the problem of low counterweight efficiency in the existing technology and improving the counterweight balance efficiency and stability of the lathe.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIZHONG GRP (HEILONGJIANG) HEAVY IND CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-31
AI Technical Summary
When machining eccentric shafts, existing lathes have low counterweight balancing efficiency, requiring multiple lifting and clamping of different counterweights to achieve balance.
Design a lathe counterweight device, including a chuck and a counterweight device. The chuck is provided with a sliding groove. The counterweight device slides with the chuck through a bolt part and an anti-disengagement slider to achieve stepless counterweight adjustment. The weight and position are adjusted in the main body groove through multiple counterweight parts.
It improves the efficiency of lathe counterweight balancing, realizes a wide range of stepless counterweight adjustment and weight adjustment, reduces the number of lifting operations, and improves the convenience and stability of operation.
Smart Images
Figure CN224574706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lathe counterweight technology, and more specifically, to a lathe. Background Technology
[0002] When machining eccentric shafts on a lathe, the uneven mass distribution of the eccentric shaft during rotation generates centrifugal force, leading to lathe vibration, noise, and bearing wear. Counterweights, used to add mass (such as balance blocks or drilling to reduce weight), adjust the overall center of mass, counteract the centrifugal force, and achieve dynamic balance.
[0003] Currently, the common method of counterweighting involves installing counterweights at multiple fixed positions on a lathe. During counterweighting, it is necessary to repeatedly lift and clamp different counterweights and place them in different positions to achieve balance, resulting in low efficiency in counterweight balancing. Utility Model Content
[0004] The problem this invention addresses is: how to improve the efficiency of counterweight balancing in lathes.
[0005] To solve the above problems, this utility model provides a lathe, including a bed, a chuck disposed at one end of the bed, and a counterweight device connected in cooperation with the chuck; The chuck includes a plurality of sliding slots on a surface near the counterweight device, the sliding slots extending radially along the chuck and penetrating the peripheral sidewall of the chuck; The counterweight device includes: The main body includes a front side and a rear side. The front side is located on the side of the rear side away from the chuck. The front side is provided with a sliding groove and a plurality of first grooves. The sliding groove passes through the main body and is correspondingly provided with the sliding slot. Multiple counterweights, with one of the first grooves for corresponding installation of one of the counterweights; The sliding fixing part includes a bolt part and a first anti-detachment slider. The first anti-detachment slider is disposed in the sliding groove and slides with the sliding groove. The bolt part passes through the sliding groove. One end of the bolt part abuts against the front side surface, and the other end of the bolt part protrudes from the rear side surface and is threadedly engaged with the first anti-detachment slider.
[0006] Optionally, the chuck further includes a plurality of positioning slots on a surface near the counterweight device, the positioning slots extending radially along the chuck; the main body also has a plurality of positioning holes corresponding to the positioning slots, the positioning holes penetrating the main body; the counterweight device further includes a plurality of positioning members, each of the positioning members being used to pass through the corresponding positioning hole and slide in cooperation with the positioning slot.
[0007] Optionally, the positioning hole includes a first sub-groove and a first sub-hole that are connected along the direction from the front side to the rear side. The first sub-hole is located on the bottom surface of the first sub-groove, the depth of the first sub-groove is less than the thickness of the main body, and the first sub-hole penetrates the rear side. The opening size of the first sub-hole is smaller than the slot size of the first sub-groove. The positioning component includes a positioning body, a positioning block, and a positioning bolt. The positioning block is used to accommodate and confine the component within the first sub-groove. The positioning body includes a rod and a second anti-detachment slider located at one end of the rod. The second anti-detachment slider is located within the positioning slot and slides with the positioning slot. The dimension of the second anti-detachment slider in a first direction is greater than the slot width of the positioning slot, and the dimension of the second anti-detachment slider in a second direction is smaller than the slot width of the positioning slot. Both the first and second directions are parallel to the plane where the slot of the positioning slot is located and intersect each other. The rod penetrates the first sub-hole and is inserted and fixed to the positioning block. The positioning bolt is used to lock the rod and the positioning block together.
[0008] Optionally, the rod body further includes a first positioning end that is threadedly engaged with the positioning bolt. The outer peripheral wall of the first positioning end includes two opposing first planes. The positioning block has a second groove at one end near the rod body. The inner wall of the second groove includes two second planes that correspond to the two first planes respectively. The first positioning end is used to insert into the second groove and be sandwiched between the two second planes to restrict the circumferential rotation of the rod body.
[0009] Optionally, the positioning hole is located on the side of the first groove away from the slide groove.
[0010] Optionally, the bottom of the first groove is provided with a first threaded hole; the counterweight part includes a first bolt and a counterweight body, the counterweight body is provided with a first through hole, and the first bolt passes through the first through hole and engages with the first threaded hole.
[0011] Optionally, the counterweight includes multiple counterweight plates, which are stacked in layers.
[0012] Optionally, the counterweight further includes a shim block, which is disposed between the bottom of the first groove and the counterweight body, or the shim block is disposed between two adjacent counterweight pieces.
[0013] Optionally, a hanging ring is provided on the surface of the counterweight on the side away from the bottom of the first groove.
[0014] Optionally, the front side and the rear side are fan-shaped; wherein the opening size of the first groove near the outer arc of the fan shape is larger than the opening size of the first groove near the inner arc of the fan shape.
[0015] The beneficial effects of this lathe are as follows: The lathe includes a chuck and a counterweight device. The chuck has a sliding groove. The counterweight device includes a main body and a sliding fixing part. The main body has a groove that penetrates the main body and corresponds to the sliding groove. The sliding fixing part includes a bolt part and a first anti-detachment slider. The bolt part passes through the groove, one end of the bolt part abuts against the front side of the main body, and the other end of the bolt part protrudes from the rear side of the main body and is threadedly engaged with the first anti-detachment slider. The first anti-detachment slider is located in the sliding groove of the chuck and slides in cooperation with the sliding groove. The bolt... The tightening or loosening engagement between the counterweight and the first anti-detachment slider allows for relative fixation or relative sliding between the counterweight device and the chuck. This facilitates position adjustment of the counterweight device during counterweighting, enabling stepless counterweight adjustment over a wide range. Simultaneously, multiple counterweight components are respectively located in multiple first grooves within the main body, facilitating weight adjustment during counterweighting. Combined with position adjustments, after a single installation of the counterweight device, multiple adjustments to its position and weight are possible, improving the efficiency of lathe counterweight balancing. Furthermore, since the sliding groove extends radially along the chuck and penetrates its peripheral wall, the first anti-detachment slider can enter the sliding groove through the opening on the chuck's peripheral wall. The width of the sliding groove opening can be smaller than the size of the first anti-detachment slider to prevent it from dislodging from the opening. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the lathe structure in an embodiment of the present utility model; Figure 2 This is a schematic diagram showing the corresponding structure of the counterweight device and the chuck in an embodiment of this utility model; Figure 3 This is a schematic diagram of the counterweight device in one embodiment of the present utility model; Figure 4 This is a schematic diagram of the positioning component in an embodiment of the present utility model; Figure 5 This is a schematic diagram of another structure of the counterweight device in an embodiment of this utility model; Figure 6 This is a schematic diagram of another structure of the counterweight device in an embodiment of this utility model.
[0017] Explanation of reference numerals in the attached figures: Lathe 100; Chuck 200; Sliding slot 210; Positioning slot 220; Bed 300; Eccentric shaft 400; Counterweight device 10; Main body 20; Front side 21; Rear side 22; Slide groove 23; First groove 24; Positioning hole 25; First threaded hole 26; First sub-slot 27; First sub-hole 28; Counterweight part 30; First bolt 31; Counterweight body 32; First through hole 33; Counterweight plate 34; Raising block 35; Hanging ring 36; Sliding fixing part 40; Bolt part 41; First anti-detachment slider 42; Positioning component 50; Positioning body 51; Positioning block 52; Second anti-detachment slider 53; First positioning end 54; First plane 541; Second groove 55; Second plane 551; Rod body 56; Positioning threaded hole 57; Positioning bolt 58. Detailed Implementation
[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.
[0019] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0020] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0021] In related technologies, when machining eccentric shafts on a lathe, the uneven mass distribution during rotation generates centrifugal force, leading to lathe vibration, noise, and bearing wear. Counterweights, by adding mass (such as balance blocks or drilling to reduce weight), adjust the overall center of gravity to counteract the centrifugal force and achieve dynamic balance. Currently, counterweighting often involves installing counterweights at multiple fixed positions on the lathe. This requires multiple lifting and clamping of different counterweights and placement in different positions to achieve balance, resulting in low efficiency.
[0022] To address the problems existing in the aforementioned related technologies, this utility model provides a lathe 100 including a chuck 200 and a counterweight device 10. The chuck 200 is provided with multiple sliding grooves 210. A sliding groove 23 is provided in the main body 20 of the counterweight device 10, penetrating the main body 20 and corresponding to the sliding grooves 210. The sliding fixing part 40 includes a bolt part 41 and a first anti-detachment slider 42. The first anti-detachment slider 42 is disposed in the sliding groove 210 and slides with the sliding groove 210. The bolt part 41 passes through the sliding groove 23. One end of the bolt part 41 abuts against the front side 21 of the main body 20, and the other end of the bolt part 41 protrudes from the rear side 22 of the main body 20 and abuts against the first anti-detachment slider 42. The anti-detachment slider 42 is threaded, and the tightening or loosening of the bolt part 41 and the first anti-detachment slider 42 is used to achieve relative fixation or relative sliding between the counterweight device 10 and the chuck 200. During counterweighting, it is convenient to adjust the position of the counterweight device 10, and a large range of stepless counterweight adjustment can be achieved. At the same time, multiple counterweight parts 30 are respectively provided in the first groove 24 of multiple main bodies 20. During counterweighting, it is convenient to adjust the weight of the counterweight device 10. With the position adjustment of the counterweight device 10, after the counterweight device 10 is hoisted at one time, it is convenient to perform multiple position adjustments and weight adjustments of the counterweight at the same time, which improves the efficiency of counterweight balancing of the lathe 100.
[0023] The following detailed description is based on specific embodiments.
[0024] Combination Figures 1 to 6As shown in the figure, a lathe 100 provided in this embodiment of the present invention includes a bed 300, a chuck 200 disposed at one end of the bed 300, and a counterweight device 10 connected to the chuck 200. The chuck 200 includes a plurality of sliding grooves 210 disposed on a surface near the counterweight device 10, the sliding grooves 210 extending radially along the chuck 200. The counterweight device 10 includes a main body 20, a plurality of counterweight parts 30, and a sliding fixing part 40. The main body 20 includes a front side 21 and a rear side 22, the front side 21 being disposed on the side of the rear side 22 away from the chuck 200, the front side 21 being used to adjust the counterweight, and the rear side 22 being used to engage with the lathe 100. The chuck 200 of 00 contacts the front side 21, which is provided with a sliding groove 23 and a plurality of first grooves 24. The sliding groove 23 penetrates the main body 20 and is correspondingly provided with the sliding groove 210. One first groove 24 is used to install one counterweight 30. The sliding fixing part 40 includes a bolt part 41 and a first anti-detachment slider 42. The first anti-detachment slider 42 is provided in the sliding groove 210 and slides with the sliding groove 210. The bolt part 41 passes through the sliding groove 23. One end of the bolt part 41 abuts against the front side 21, and the other end of the bolt part 41 protrudes from the rear side 22 and is threadedly engaged with the first anti-detachment slider 42.
[0025] Understandably, for ease of explanation, the following description uses a horizontal lathe 100 as an example; this is merely an example and not a specific limitation. Please refer to [link / reference needed] for details. Figures 1 to 3 , Figure 5 Since the first anti-detachment slider 42 is confined within the sliding groove 210 of the chuck 200, and one end of the bolt portion 41 abuts against the front side surface 21, clamping the main body 20 onto the chuck 200, loosening the bolt portion 41 and the first anti-detachment slider 42 reduces the pressure exerted by the bolt portion 41 on the front side surface, thereby reducing the pressure exerted by the rear side surface 22 on the surface of the chuck 200 and reducing the friction between the rear side surface 22 and the surface of the chuck 200. When the friction is reduced to a certain value, the main body 20 can be easily... The chuck 200 slides to facilitate adjustment of the counterweight position of the main body 20, adjusting it to a suitable position (ensuring compliance with process requirements, such as the main body 20 not being located outside the turning radius of the lathe 100). When the bolt part 41 is tightened between the bolt part 41 and the first anti-detachment slider 42, the compressive force of the bolt part 41 on the front side 21 is increased, thereby increasing the compressive force of the rear side 22 on the surface of the chuck 200, and further increasing the friction between the rear side 22 and the surface of the chuck 200, so that the main body 20 is fixed on the chuck 200. At the same time, an appropriate number and weight of counterweight parts 30 can be provided in the first groove 24.
[0026] When machining an eccentric shaft, the eccentric shaft 400 to be machined is usually clamped on the chuck 200, and the counterweight device 10 is hoisted onto the side of the chuck opposite to the eccentric shaft 400 and fixed. For example, if the eccentric shaft 400 is set on one semicircle of the chuck, the counterweight device 10 can be installed on the other semicircle of the chuck. The lathe 100 is rotated to check the counterweight situation. When the counterweight is fully balanced, the eccentric shaft 400 and the counterweight device 10 should be able to stop at any position. When the eccentric shaft 400 can only stop at the bottom end of the corresponding chuck 200, the bolt part 41 and the first anti-disengagement slider 42 are loosened. After adjusting the counterweight device 10 to move it to a suitable position away from the center of the chuck 200, tighten the bolt part 41 and the first anti-detachment slider 42 to fix the main body 20 on the chuck 200, and rotate the lathe 100 to check the counterweight condition; conversely, if the eccentric shaft 400 can only stop at the top of the corresponding chuck 200, loosen the bolt part 41, adjust the counterweight device 10 to move it to a suitable position closer to the center of the chuck 200, and then tighten the bolt part 41 and the first anti-detachment slider 42, and rotate the lathe 100 to check the counterweight condition.
[0027] After adjusting the counterweight device 10 to the appropriate position, the number of counterweight parts 30 can be increased or decreased to adjust the weight of the counterweight device 10. The number of counterweight parts 30 and the number of first grooves 24 can be adjusted according to actual needs. For example, four first grooves 24 can be set, and only three counterweight parts 30 can be set. By adjusting the setting position of the three counterweight parts 30, the center of gravity of the counterweight device 10 can be adjusted, and the counterweight of the lathe 100 can also be adjusted. After the counterweight device 10 is hoisted once, the position and weight of the counterweight can be adjusted multiple times simultaneously, improving the efficiency of the counterweight balance of the lathe 100.
[0028] In addition, since the sliding groove 210 extends radially along the chuck 200 and penetrates the peripheral sidewall of the chuck 200, the first anti-detachment slider 42 can enter the sliding groove 210 from the opening of the sliding groove 210 provided on the peripheral sidewall of the chuck 200. The width of the groove opening of the sliding groove 210 can be smaller than the size of the first anti-detachment slider 42 to prevent the first anti-detachment slider 42 from coming out of the groove opening of the sliding groove 210.
[0029] In some embodiments, please refer to the following for details. Figures 1 to 3 The first anti-detachment slider 42 can be a T-shaped slider. The first anti-detachment slider 42 includes a first part and a second part. The first part is connected to the bolt part 41 through the second part. The width of the first part is greater than the width of the second part.
[0030] Understandably, please refer to the details. Figure 2The chuck 200 of the lathe 100 has multiple sliding grooves 210 on its surface near the counterweight device 10. These sliding grooves 210 extend radially along the chuck 200 and penetrate its outer circumferential surface. The shape of the groove opening of the sliding groove 210 corresponding to the shape of the first part of the sliding fixing part 40. The opening width of the sliding groove 210 is smaller than its internal width, such as a T-slot or dovetail groove, to prevent the first part from dislodging from the sliding groove 210. The first part acts as a limiting block, and the second part acts as a connecting neck, forming a "large head + narrow neck" structure that ensures connection while preventing detachment.
[0031] In some embodiments, please refer to the following for details. Figure 1 , Figure 2 , Figure 5 The chuck 200 has multiple sliding grooves 210 on its surface near the counterweight device 10. These sliding grooves 210 correspond to the sliding channels 23. The sliding grooves 210 extend radially along the chuck 200 and penetrate its outer circumferential surface. The shape of the opening of the sliding groove 210 penetrating the outer circumferential surface of the chuck 200 corresponds to the shape of the first anti-detachment slider 42 of the sliding fixing part 40. It can be understood that when assembling the counterweight device 10, the first anti-detachment slider 42 can be first placed into the sliding groove 210 from the opening on the outer circumferential surface of the chuck 200, and then the bolt part 41 can be threaded through the sliding channel 23 from the front side 21 to engage with the first anti-detachment slider 42. The sliding channel 21 has a certain length to facilitate the sliding of the bolt part 41 within it, thereby facilitating the connection between the bolt part 41 and the first anti-detachment slider 42.
[0032] Specifically, the sliding slot 210 extends radially along the chuck 200, and a plurality of the sliding slots 210 are arranged at intervals along the circumference of the chuck 200.
[0033] In some embodiments, please refer to the following for details. Figures 1 to 4 The chuck 200 further includes a plurality of positioning slots 220 disposed on a surface near the counterweight device 10, the positioning slots 220 extending radially along the chuck 200; the main body 20 is also provided with a plurality of positioning holes 25 corresponding to the positioning slots 220, the positioning holes 25 penetrating the main body 20; the counterweight device 10 further includes a plurality of positioning members 50, each positioning member 50 being used to pass through the corresponding positioning hole 25 and slide in cooperation with the positioning slot 220.
[0034] By slidingly engaging the positioning element 50 with the positioning slot 220 and the sliding fixing part 40 with the sliding slot 210, the positioning accuracy and stability of the main body 20 on the chuck 200 are improved, the shaking of the main body 20 on the chuck 200 is reduced, and the positioning stability between the overall counterweight device and the chuck is improved.
[0035] In some embodiments, please refer to the following for details. Figures 1 to 4 The positioning hole 25 includes a first sub-groove 27 and a first sub-hole 28 that are connected along the direction from the front side 21 to the rear side 22. The first sub-hole 28 is located on the bottom surface of the first sub-groove 27. The depth of the first sub-groove 27 is less than the thickness of the main body. The first sub-hole 28 penetrates the rear side. The opening size of the first sub-hole 28 is smaller than the opening size of the first sub-groove 27. The positioning member 50 includes a positioning body 51, a positioning block 52, and a positioning bolt 58. The positioning block 52 is used to accommodate and confine the member within the first sub-groove 27. The positioning body 51 includes a rod 56 and a bolt located at one end of the rod 56. The second anti-detachment slider 53 is disposed in the positioning slot 220 and slides in cooperation with the positioning slot 220. The dimension of the second anti-detachment slider 53 in the first direction is larger than the slot width of the positioning slot 220, and the dimension of the second anti-detachment slider 53 in the second direction is smaller than the slot width of the positioning slot 220. Both the first direction and the second direction are parallel to the plane where the slot of the positioning slot 220 is located and intersect each other. The rod 56 passes through the first sub-hole 28 and is inserted and fixed to the positioning block 52. The positioning bolt 58 is used to lock the rod 56 and the positioning block 52.
[0036] It is understood that the positioning body 51 and the positioning block 52 clamp the main body 20 on the chuck 200 to reduce the shaking of the main body 20 on the chuck 200 and enhance the stability of the fixation between the main body 20 and the chuck 200. The positioning slot 220 can be a T-shaped slot, with the first direction perpendicular to the second direction, and the second anti-detachment slider 53 being elongated as an example. The second anti-detachment slider 53 has two oppositely arranged first long sides and two oppositely arranged first short sides. The width of the second anti-detachment slider 53 in the first direction is the length of the first long side, and the width of the second anti-detachment slider 53 in the second direction is the length of the first short side. The length of the first long side is greater than the slot width of the positioning slot 220 in the direction perpendicular to the extension of the positioning slot 220, and the length of the first short side is less than the slot width of the positioning slot 220 in the direction perpendicular to the extension of the positioning slot 220. The slot width of the positioning slot 220 in the direction perpendicular to the extension of the positioning slot 220 is simply referred to as the slot width of the positioning slot 220.
[0037] By rotating the rod 56 to rotate the second anti-detachment slider 53, the first long side is parallel to the extension direction of the positioning slot 220, and the first short side is perpendicular to the extension direction of the positioning slot 220. Since the length of the first short side is narrower than the width of the slot opening of the positioning slot 220, the second anti-detachment slider 53 can be inserted into the positioning slot 220. Similarly, the second anti-detachment slider 53 can be moved out of the positioning slot 220.
[0038] By rotating the rod 56 to rotate the second anti-detachment slider 53, for example, by rotating it 90°, the first long side is perpendicular to the extending direction of the positioning slot 220. Since the length of the first long side is greater than the width of the slot 220, the second anti-detachment slider 53 is confined within the positioning slot 220. Because the second anti-detachment slider 53 is confined within the positioning slot 220, the positioning block 52 abuts against the bottom surface of the first sub-slot 27. The main body 20 is clamped onto the chuck 200 by the positioning block 52 and the second anti-detachment slider 53. When the rod 56 is threadedly tightened with the positioning block 52 and the positioning bolt 58, the compressive force of the positioning block 52 on the bottom surface of the first sub-slot 27 is increased. The increased pressure of the rear side 22 on the surface of the chuck 200 increases the friction between the rear side 22 and the surface of the chuck 200, reducing the swaying of the main body 20 on the chuck 200 and enhancing the stability of the main body 20 on the chuck 200. When the threads of the positioning body 51, the positioning block 52, and the positioning bolt 58 are loosened, the pressure of the positioning block 52 on the bottom surface of the first sub-slot 27 is reduced, thereby reducing the pressure of the rear side 22 on the surface of the chuck 200 and reducing the friction between the rear side 22 and the surface of the chuck 200. When the friction is reduced to a certain value, the main body 20 can slide relative to the chuck 200, facilitating the adjustment of the counterweight position of the main body 20.
[0039] Specifically, the positioning slot 220 extends radially along the chuck 200, and a plurality of positioning slots 220 are arranged at intervals along the circumference of the chuck 200.
[0040] In some embodiments, please refer to the following for details. Figure 4 The rod body 56 further includes a first positioning end 54 that is threadedly engaged with the positioning bolt 58. The outer peripheral wall of the first positioning end 54 includes two opposing first planes 541. The positioning block 52 has a second groove 55 at one end near the rod body 56. The inner wall of the second groove 55 includes two second planes 551 that correspond to the two first planes 541 respectively. The first positioning end 54 is used to insert into the second groove 55 and sandwich between the two second planes 551 to restrict the circumferential rotation of the rod body 56.
[0041] When it is necessary to fix the main body 20 on the chuck 200, rotate the positioning body 51 so that the first long side of the second anti-detachment slider 53 is perpendicular to the extension direction of the positioning slot 220. Then, fasten the positioning block 52 to the end of the positioning body 51. The second groove 55 is correspondingly set with the first positioning end 54. The two first planes 541 are respectively corresponding to the two second planes 551. The first positioning end 54 is sandwiched between the two second planes 551. When the first positioning end 54 has a circumferential rotation or a tendency to rotate circumferentially, the first positioning end 54 is used to insert into the second groove 55 and sandwiched between the two second planes 551. The first plane 541 contacts the second plane 551. The two second planes 551 can restrict the circumferential rotation of the first positioning end 54. If the first long side of the second anti-detachment slider 53 is parallel to the extension direction of the positioning slot 220, the second anti-detachment slider 53 will disengage from the positioning slot 220, restricting the circumferential rotation of the first positioning end 54, thus reducing the risk of the second anti-detachment slider 53 disengaging from the positioning slot 220 and further enhancing the stability of the fixation between the main body 20 and the chuck 200.
[0042] For details, please refer to [link / reference]. Figure 2 , Figure 4 The first positioning end 54 has a positioning threaded hole 57 on its end face, and the positioning block 52 has a through hole. The positioning bolt 58 passes through the through hole and is threadedly connected to the positioning threaded hole 57 of the first positioning end 54. The positioning block 52 has a second groove 55 at one end near the positioning body 51.
[0043] In some embodiments, please refer to the following for details. Figure 3 The inner wall of the first sub-slot 27 has a non-circular outline, and the outer wall of the positioning block 52 matches the inner wall outline of the first sub-slot 27.
[0044] Please refer to the details. Figure 4 The positioning block 52 is provided with the second groove 55. When the positioning bolt 58 is tightened, the positioning block 52 may also rotate, which would pose a risk of rotation to the positioning body 51. The outline shape of the outer peripheral wall of the positioning block 52 matches the outline shape of the inner sidewall of the first sub-groove 27. When the positioning bolt 58 is tightened, if the positioning block 52 has a tendency to rotate circumferentially, the outline of the inner sidewall of the first sub-groove 27 is non-circular. The inner wall of the first sub-groove 27 will restrict the rotation of the positioning block 52, thereby further restricting the circumferential rotation of the first positioning end 54, thus reducing the risk of the second anti-detachment slider 53 falling out of the positioning slot 220, and further enhancing the stability of the fixation between the main body 20 and the chuck 200. At the same time, the positioning bolt 58 and the positioning body 51 are threaded together, which enhances the stability of the connection between the positioning body 51 and the positioning block 52.
[0045] In some embodiments, please refer to the following for details. Figure 3 The positioning hole 25 is located on the side of the first groove 24 away from the slide groove 23. It is understood that the main body 20 is at risk of wobbling along the slide groove 23 or the sliding fixing part 40. The positioning member 50 reduces the wobbling of the main body 20 on the chuck 200. The positioning hole 25 and the positioning member 50 are correspondingly arranged. The farther the positioning hole 25 is from the slide groove 23, the farther the positioning member 50 is from the slide groove 23, and the longer the fixing force of the positioning member 50 is relative to the fixing lever arm of the slide groove 23, resulting in a better fixing effect of the positioning member 50.
[0046] For details, please refer to [link / reference]. Figure 2 , Figure 4 The positioning body 51 includes a rod 56, a first positioning end 54, and a second anti-detachment slider 53. The second anti-detachment slider 53 is connected to the first positioning end 54 via the rod 56, and the first positioning end 54 is threadedly engaged with the positioning bolt 58. The rod 56 is cylindrical. The rod 56 is used to rotate within the first sub-hole 28 to rotate the second anti-detachment slider 53, thereby causing the second anti-detachment slider 53 to separate from or abut against the positioning groove 220 of the chuck 200.
[0047] In some embodiments, please refer to the following for details. Figure 3 , Figure 5 , Figure 6 The bottom of the first groove 24 is provided with a first threaded hole 26; the counterweight part 30 includes a first bolt 31 and a counterweight body 32. The counterweight body 32 is provided with a first through hole 33, that is, the first through hole 33 penetrates the counterweight body 32, and the first bolt 31 passes through the first through hole 33 and is engaged with the first threaded hole 26.
[0048] The threaded engagement between the first bolt 31 and the first threaded hole 26 has a self-locking property, which can firmly fix the counterweight 32 in the first groove 24, preventing the counterweight 32 from shifting or falling off due to vibration or impact during equipment operation, and ensuring stable counterweight effect.
[0049] In some embodiments, please refer to the following for details. Figure 5 The counterweight 32 comprises multiple counterweight plates 34, which are stacked. Each counterweight plate 34 can be of the same specification, and the weight can be adjusted in steps by increasing or decreasing the number of stacked plates. Compared with a single counterweight 32, this method can more accurately match the target weight value. If the weight needs to be adjusted, only some counterweight plates 34 need to be added or removed individually, without disassembling the entire counterweight 32, making the operation simpler.
[0050] In some embodiments, please refer to the following for details. Figure 6The counterweight 30 also includes a shim block 35, which is disposed between the bottom of the first groove 24 and the counterweight 32, or between two adjacent counterweight pieces 34. If the depth of the first threaded hole 26 is insufficient, or the total thickness of the multiple counterweight pieces 34 is too thin, the first bolt 31, after being screwed into the first threaded hole 26, cannot effectively fix the multiple counterweight pieces 34, and the multiple counterweight pieces 34 are prone to shaking, thereby affecting the safety of the lathe 100. In this case, the shim block 35 can be used as a thickness compensation component. The figure only shows the embodiment where the shim block 35 is disposed between the bottom of the first groove 24 and the counterweight 32. The embodiment where the shim block 35 is disposed between two adjacent counterweight pieces 34 is omitted for ease of understanding. By matching the thickness of the shim block 35 with the thickness of the counterweight plate 34, the first bolt 31 can effectively fix the multiple counterweight plates 34, ensuring that the multiple counterweight plates 34 are firmly locked in the first groove 24 by the first bolt 31, thereby ensuring the safe operation of the lathe 100.
[0051] In some embodiments, please refer to the following for details. Figure 6 The counterweight 32 has a hanging ring 36 on the surface of the side away from the bottom of the first groove 24. If the first groove 24 is deep, or if there are other components obstructing the first groove 24, it is difficult to reach directly into the first groove 24 to grab the counterweight 32. In this case, the hook can be used to hook the hanging ring 36 and then pull the counterweight 32 out of the first groove 24, improving the convenience, safety and efficiency of loading and unloading the counterweight 32.
[0052] In some embodiments, please refer to the following for details. Figure 3 , Figure 5 , Figure 6 The front side 21 and the rear side 22 are fan-shaped; wherein the size of the first groove 24 near the outer arc of the fan shape is larger than the size of the first groove 24 near the inner arc of the fan shape.
[0053] Understandably, the larger the opening size of the first groove 24, the larger the corresponding counterweight 30. The outer arc side of the fan-shaped structure is farther from the rotation center of the chuck 200 than the inner arc side, making it more sensitive to counterweight balance. In other words, even a small change in the mass of the counterweight 30 can cause a significant shift in the center of gravity. For large-scale counterweight adjustments, a larger counterweight 30 has a greater mass, facilitating such adjustments. The inner arc side is closer to the rotation center, resulting in a smaller change in the center of gravity for the same mass change, allowing for finer mass adjustments. Combined with a smaller counterweight 30, it can be used for fine-tuning the center of gravity.
[0054] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. A lathe characterized by, It includes a bed body (300), a chuck (200) located at one end of the bed body (300), and a counterweight device (10) that is connected to the chuck (200). The chuck (200) includes a plurality of sliding slots (210) provided on a surface near the counterweight device (10), the sliding slots (210) extending radially along the chuck (200) and penetrating the peripheral sidewall of the chuck (200); The counterweight device (10) includes: The main body (20) includes a front side (21) and a rear side (22). The front side (21) is located on the side of the rear side (22) away from the chuck (200). The front side (21) is provided with a sliding groove (23) and a plurality of first grooves (24). The sliding groove (23) penetrates the main body (20). The sliding groove (23) is correspondingly provided with the sliding slot (210). Multiple counterweights (30), one of the first grooves (24) is used to install one of the counterweights (30); The sliding fixing part (40) includes a bolt part (41) and a first anti-detachment slider (42). The first anti-detachment slider (42) is disposed in the sliding groove (210) and slides in cooperation with the sliding groove (210). The bolt part (41) passes through the sliding groove (23). One end of the bolt part (41) abuts against the front side (21), and the other end of the bolt part (41) protrudes from the rear side (22) and is threadedly engaged with the first anti-detachment slider (42).
2. The lathe according to claim 1, characterized in that, The chuck (200) also includes a plurality of positioning slots (220) provided on a surface near the counterweight device (10), the positioning slots (220) extending radially along the chuck (200); The main body (20) is also provided with a plurality of positioning holes (25) corresponding to the positioning slot (220), and the positioning holes (25) penetrate the main body (20). The counterweight device (10) also includes a plurality of positioning elements (50), each of the positioning elements (50) being used to pass through the corresponding positioning hole (25) and slide in cooperation with the positioning slot (220).
3. The lathe according to claim 2, characterized in that, The positioning hole (25) includes a first sub-groove (27) and a first sub-hole (28) that are connected along the front side (21) to the rear side (22). The first sub-hole (28) is located on the bottom surface of the first sub-groove (27). The depth of the first sub-groove (27) is less than the thickness of the main body. The first sub-hole (28) penetrates the rear side. The opening size of the first sub-hole (28) is smaller than the opening size of the first sub-groove (27). The positioning element (50) includes a positioning body (51), a positioning block (52), and a positioning bolt (58); The positioning block (52) is used to accommodate and confine the first sub-groove (27); the positioning body (51) includes a rod (56) and a second anti-detachment slider (53) disposed at one end of the rod (56). The second anti-detachment slider (53) is disposed in the positioning slot (220) and slides with the positioning slot (220). The size of the second anti-detachment slider (53) in the first direction is larger than the slot width of the positioning slot (220). The size of the second anti-detachment slider (53) in the second direction is smaller than the slot width of the positioning slot (220). The first direction and the second direction are both parallel to the plane where the slot of the positioning slot (220) is located and intersect each other. The rod (56) passes through the first sub-hole (28) and is inserted and fixed with the positioning block (52). The positioning bolt (58) is used to lock the rod (56) and the positioning block (52) together.
4. The lathe according to claim 3, characterized in that, The rod body (56) also includes a first positioning end (54) that is threadedly engaged with the positioning bolt (58), and the outer peripheral wall of the first positioning end (54) includes two opposing first planes (541). The positioning block (52) has a second groove (55) at one end near the rod (56). The inner wall of the second groove (55) includes two second planes (551) that correspond to the two first planes (541) respectively. The first positioning end (54) is used to insert into the second groove (55) and sandwiched between the two second planes (551) to restrict the circumferential rotation of the rod (56).
5. The lathe according to claim 2, characterized in that, The positioning hole (25) is located on the side of the first groove (24) away from the slide (23).
6. The lathe according to claim 1, characterized in that, The bottom of the first groove (24) is provided with a first threaded hole (26); The counterweight (30) includes a first bolt (31) and a counterweight (32). The counterweight (32) is provided with a first through hole (33). The first bolt (31) passes through the first through hole (33) and is connected to the first threaded hole (26).
7. The lathe according to claim 6, characterized in that, The counterweight (32) includes multiple counterweight pieces (34) which are stacked.
8. The lathe according to claim 7, characterized in that, The counterweight (30) also includes a shim (35), which is located between the bottom of the first groove (24) and the counterweight (32), or between two adjacent counterweight pieces (34).
9. The lathe according to claim 6, characterized in that, The counterweight (32) has a hanging ring (36) on the surface of the side away from the bottom of the first groove (24).
10. The lathe according to any one of claims 1-9, characterized in that, The front side (21) and the rear side (22) are fan-shaped; The opening size of the first groove (24) near the outer arc of the fan-shaped structure is larger than the opening size of the first groove (24) near the inner arc of the fan-shaped structure.