Axle seat clamp and vertical lathe

Abstract

The application discloses a shaft seat clamp and a vertical lathe, and the shaft seat clamp comprises a base, has a first direction and a second direction which are perpendicular to each other, two supports which are symmetrically arranged on opposite sides of the base along the first direction, two positioning plates which are respectively arranged on the corresponding supports and are connected to the end faces of the supports which are towards the center of the base, two clamping blocks which are symmetrically arranged on the other two opposite sides of the base along the second direction and are arranged between the two positioning plates, a sliding assembly which is arranged on the base and is connected with the clamping blocks so as to drive the clamping blocks to slide along the second direction of the base, and a tensioning assembly which is arranged on the support and extends from the end face of the support which is towards the center of the base. Two shaft seats are fixed on the base, the faces of the shaft seats to be machined are opposite, two shaft seats can be machined at the same time, the positioning precision is high, the clamping stability is good, and the efficiency of machining arcs of the shaft seats is improved.

Description

Technical Field

[0001] This invention relates to the field of machining, and in particular to a shaft seat fixture and a vertical lathe. Background Technology

[0002] In machining, fixtures are typically used to clamp workpieces and keep them in a fixed position for machining. They are commonly used auxiliary tools during machine tool operation.

[0003] In related technologies, a bearing seat is an automotive component. It is generally machined by turning arcs on a horizontal milling machine, but only one part can be machined at a time. The efficiency of turning arcs is low, the production speed of parts is slow, and it is not easy to meet the needs of mass production of bearing seats. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a bearing fixture that can clamp two bearings in one machining operation and simultaneously perform arc turning on the two bearings, achieving high machining accuracy and improving bearing production efficiency.

[0005] The present invention also proposes a vertical lathe having the above-mentioned bearing fixture.

[0006] According to a first aspect of the present invention, a shaft holder clamp includes a base having a first direction and a second direction perpendicular to each other; two supports symmetrically disposed on opposite sides of the base along the first direction; two positioning plates respectively disposed on corresponding supports, the positioning plates being connected to the end faces of the supports facing the center of the base; two clamping blocks symmetrically disposed on the other opposite sides of the base along the second direction, the clamping blocks being disposed between the two positioning plates; a sliding assembly disposed on the base, the sliding assembly being connected to the clamping blocks to drive the clamping blocks to slide along the second direction of the base; and a tensioning assembly disposed on the supports and extending along the end faces of the supports facing the center of the base.

[0007] The bearing fixture according to an embodiment of the present invention has at least the following beneficial effects: two supports are provided in the first direction of the base, each support is connected to a positioning plate, and each positioning plate is correspondingly installed with a bearing. The through hole on the bearing is opened and tensioned by a tensioning component to fix the bearing on the support. In the second direction of the base, clamping blocks installed on both sides of the base approach each other under the drive of a sliding component until the bearing is clamped from both ends. The two bearings are thus fixed on the base, and the surfaces to be processed on the bearings are opposite each other. Two bearings can be processed at the same time, with high positioning accuracy, good clamping stability, and improved efficiency of turning the bearing arc.

[0008] According to some embodiments of the present invention, the sliding assembly includes a slider and a bidirectional ball screw, the two ends of the bidirectional ball screw are respectively provided with threaded sleeves connected by threads, the slider is fixedly connected to the threaded sleeves so that the slider can slide along the bidirectional ball screw, and the clamping block is fixedly connected to the slider.

[0009] According to some embodiments of the present invention, the clamping block is provided with clamping inclined surfaces on both sides along its width direction, and the two clamping inclined surfaces are used to cooperate with the workpiece for positioning.

[0010] According to some embodiments of the present invention, the sliding assembly includes a pressure plate and a clamping slide, the clamping slide being fixedly connected to the base, the clamping slide having a third groove, and the lower end face of the pressure plate engaging with the bottom wall of the third groove to form a track for the slider to slide.

[0011] According to some embodiments of the present invention, a positioning seat is connected to the clamping slide, the bidirectional ball screw is provided with two protrusions, and the positioning seat is disposed between the two protrusions.

[0012] According to some embodiments of the present invention, the positioning seat is provided with a fourth groove that cooperates with the bidirectional ball screw, and the distance between the two protrusions is greater than the width of the positioning seat.

[0013] According to some embodiments of the present invention, the tensioning assembly includes a first screw, a steel ball, and two expansion pins. The bracket is provided with a sleeve, the first screw is disposed inside the sleeve, the first screw has a push-out portion that abuts against the steel ball, the sleeve has a through hole for installing the expansion pins, and the opposite ends of the two expansion pins form a concave flange, with the steel ball disposed in the concave flange.

[0014] According to some embodiments of the present invention, the tensioning assembly further includes a reset member, and the sleeve is further provided with a receiving groove for fitting the reset member around the circumference of the sleeve so that the two tension pins can be tensioned or reset along the radial direction of the sleeve.

[0015] According to some embodiments of the present invention, the bracket is provided with a first groove, the positioning plate is provided with a second groove, and the shaft seat clamp includes a limiting block, the two ends of the limiting block being respectively connected to the first groove and the second groove, so that the positioning plate is mounted on the bracket.

[0016] A vertical lathe according to a second aspect of the present invention includes a bearing fixture according to the first aspect of the present invention described above.

[0017] The vertical lathe according to the embodiments of the present invention has at least the following beneficial effects: by using the above-mentioned bearing fixture, two bearings are manually clamped onto the base, improving the positioning accuracy of the bearings, thereby improving the machining accuracy of the bearing arc, the vertical lathe can process two bearings at a time, the bearing clamping is stable, and the machining efficiency of the vertical lathe is improved.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a cross-sectional view of the shaft seat fixture according to an embodiment of the present invention;

[0021] Figure 2 This is a top view of the shaft seat fixture according to an embodiment of the present invention;

[0022] Figure 3 for Figure 2 The enlarged structural diagram at point A is shown;

[0023] Figure 4 This is a side sectional view of the shaft seat fixture according to an embodiment of the present invention.

[0024] Figure label:

[0025] Shaft seat 100;

[0026] Base 200; sliding assembly 210; slider 211; bidirectional ball screw 212; protrusion 2121; threaded sleeve 213; pressure plate 214; clamping slide 215; third groove 2151; operating handle 216; positioning seat 217; fourth groove 2171;

[0027] Bracket 300; Sleeve 310; Receiving groove 311; Through hole 312; First groove 320;

[0028] Positioning plate 400; Second groove 410;

[0029] Clamping block 500; Clamping inclined plane 510;

[0030] Tensioning assembly 600; First screw 610; Push-out part 611; Steel ball 620; Expansion pin 630; Reset part 640;

[0031] Limit block 700. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0034] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0036] In machining, fixtures are typically used to clamp workpieces, holding them in a fixed position for processing. They are commonly used auxiliary tools during machine tool operation. In related technologies, shaft seats are machined by turning circular arcs on horizontal milling machines, but only one part can be machined at a time. This results in low efficiency for turning circular arcs, slow part production speed, and difficulty in meeting the needs of mass production of shaft seats.

[0037] Reference Figure 1The shaft seat clamp of this embodiment includes a base 200, on which two supports 300 symmetrically distributed about a first direction about the base 200 are connected. The two supports 300 extend toward the upper end of the base 200. Positioning plates 400 are fixedly connected to the opposite end faces of the two supports 300. The upper end face of the positioning plate 400 is flush with the upper end face of the support 300. Tensioning components 600 are also fixedly connected to the supports 300. Tensioning components 600 and positioning plates 400 are arranged vertically at intervals. Tensioning components 600 are used to tension and fix the hole of the shaft seat 100. Two clamping blocks 500 are symmetrically arranged on the base 200 at both ends of the support 300 along the length direction. The two clamping blocks 500 can slide under the drive of the sliding component 210 to move closer to each other or further away from each other. The bearing seat 100 is installed onto the fixture, and the hole of the bearing seat 100 is fitted into the tensioning assembly 600. The bearing seat 100 mates with the positioning plate 400. The tensioning assembly 600 is adjusted so that the bearing seat 100 is installed on the bracket 300. The bearing seats 100 are installed symmetrically. The sliding clamping blocks 500 are moved closer to each other, and the clamping blocks 500 are fixed when they contact the two ends of the two bearing seats 100 respectively. The bearing seats 100 are easy to clamp. Both bearing seats 100 are fixed on the base 200. The vertical lathe can perform arc machining on the bearing seats 100 from above the bracket 300. Since the surfaces to be machined on the two bearing seats 100 are opposite each other, the vertical lathe can machine two arcs at the same time, improving the machining efficiency of the bearing seats 100 and improving the accuracy of arc machining, which can meet the needs of mass production.

[0038] In some embodiments of the present invention, the clamping block 500 is driven to slide by a sliding assembly 210 connected to the base 200. The sliding assembly 210 includes two sliders 211 and a bidirectional ball screw 212. The bidirectional ball screw 212 passes through the two sliders 211. The two ends of the bidirectional ball screw 212 that match the sliders 211 are respectively provided with left-hand threads and right-hand threads. The sliding assembly 210 also includes two threaded sleeves 213 that match the threads at both ends of the bidirectional ball screw 212. The threaded sleeves 213 are fixedly connected to the end face of the slider 211 away from the center of the base 200 and extend along the ball screw toward the center of the base 200. The clamping block 500 is fixedly connected to the slider 211 and moves to the left or right as the bidirectional ball screw 212 rotates. When the bidirectional ball screw 212 rotates, the threaded sleeves 213 are displaced relative to the ball screw due to their threaded engagement, causing the connected sliders 211 to slide on the base 200, so that the clamping block 500 moves away from or closer to the bearing seat 100. By setting a bidirectional ball screw 212 on the base 200, the movement of the two sliders 211 is unified. When the bidirectional ball screw 212 rotates in one direction, the clamping blocks 500 move closer or further away from each other; when the bidirectional ball screw 212 rotates in the opposite direction, the clamping blocks 500 move further or closer to each other. The sliding assembly 210 has a compact structure, and the clamping efficiency of the bearing seat 100 is improved.

[0039] Reference Figure 2 In some embodiments of the present invention, two symmetrically distributed clamping blocks 500 are provided on the base 200 in a second direction perpendicular to the first direction. The two clamping blocks 500 are used to clamp the bearing seat 100 from the left and right sides. Each clamping block 500 is provided with two clamping inclined surfaces 510, which are respectively arranged on both sides along the width direction of the clamping block 500 so as to contact the front and rear bearing seats 100 respectively. Rotating the bidirectional ball screw 212 can bring the clamping blocks 500 closer to each other. When the inclined surfaces contact the bearing seat 100, the clamping of the bearing seat 100 is completed. The bearing seat fixture has strong adjustability and can improve the adaptability of the bearing seat fixture to the bearing seat 100. The two inclined surfaces of the clamping block 500 extend to one end near the center of the base 200 to form a vertical plane parallel to the first direction of the base 200 to transition and connect the two inclined surfaces. At the same time, it has a certain distance from the machining position of the shaft seat 100 to avoid collision with the clamping block 500 during the turning of the arc on the vertical lathe, which would affect the machining accuracy of the shaft seat 100.

[0040] Reference Figure 4 In some embodiments of the present invention, the lower end of the slider 211 has a protrusion along both its front and rear ends. A clamping slide 215 is provided on the base 200. A pressure plate 214 is connected to the upper surface of the clamping slide 215. The lower surface of the pressure plate 214 engages with the bottom wall of the third groove 2151 of the clamping slide 215 to form a track, allowing the protrusion to slide along this track on the base 200. A bidirectional ball screw 212 passes sequentially through the two sliders 211. The pressure plate 214 and the clamping slide 215 define a track guiding the slider 211 to slide, fixing the slider 211 to the base 200 and further improving the clamping reliability of the shaft seat fixture.

[0041] Specifically, the positioning seat 217 is installed at the center of the base 200 on the clamping slide 215. The bidirectional ball screw 212 is provided with two protrusions 2121 that cooperate with the positioning seat 217 to ensure that it has the correct relative position with the clamping slide 215, further improving the centering accuracy of the two sliders 211. The clamping block 500 can clamp the shaft seat 100 from both the left and right ends of the shaft seat 100 at the same time, improving the clamping accuracy of the shaft seat 100.

[0042] In some embodiments of the present invention, the positioning seat 217 is provided with a fourth groove 2171, and the positioning seat is located between two protrusions 2121. The diameter of the protrusions 2121 is greater than the distance between the two side walls of the fourth groove 2171, and the distance between the two protrusions 2121 is greater than the width of the positioning seat 217. With this arrangement, the bidirectional ball screw 212 can move left and right in the fourth groove 2171. The two protrusions 2121 limit the range of its movement. When installing the bearing seat 100, the relative positions of the two clamping blocks 500 can be adjusted appropriately to clamp more stably, improve the adjustability of the bearing seat fixture, and improve the machining accuracy of the arc of the bearing seat 100.

[0043] In some embodiments of the present invention, during clamping, the bidirectional ball screw 212 is rotated by operating handle 216. The outer end of the bidirectional ball screw 212 with threads is also provided with a polygonal prism. The operating handle 216 is provided with a polygonal prism-shaped hole. By matching the polygonal prism hole with the polygonal end of the bidirectional ball screw 212, the bidirectional ball screw 212 can be rotated by operating handle 216. The installation is convenient, the bidirectional ball screw 212 is not easy to rotate, and the operation is simple with the operating handle 216, which further improves the clamping efficiency of the bearing seat 100.

[0044] Reference Figure 2 and Figure 3 In some embodiments of the present invention, a sleeve 310 is provided on the bracket 300. A first screw 610, a steel ball 620 and an expansion pin 630 are sequentially provided inside the sleeve 310 along the axial direction of the sleeve 310. One end of the first screw 610 is engaged with the internal thread of the sleeve 310, and the other end forms a push-out portion 611 that abuts against the steel ball 620. Two expansion pins 630 are provided, located in the through hole 312 opened radially along the sleeve 310 and symmetrical about the axial direction of the sleeve 310. The cross-sectional area of ​​the expansion pin 630 near the axial direction of the sleeve 310 gradually decreases to form a conical head. The conical heads of the two expansion pins 630 cooperate to form a concave flange that abuts against the steel ball 620. Inside the sleeve 310, the first screw 610 is threadedly engaged with the sleeve 310. Tightening the first screw 610 causes the push-out part 611 to push the steel ball 620 forward. The steel ball 620 squeezes the concave flange, causing the two expansion pins 630 to be tensioned to both sides. The expansion pins 630 support the inner wall of the hole of the bearing seat 100, achieving the effect of fixing the relative position of the bearing seat 100 on the bracket 300. The positioning accuracy is high, thereby improving the machining accuracy of the arc of the bearing seat 100.

[0045] In some embodiments of the present invention, a receiving groove 311 is provided at the position where the outer peripheral wall of the sleeve 310 mates with the expansion pin 630. The reset member 640 is sleeved in the receiving groove 311. The reset member 640 is annular. The end faces of the two expansion pins 630 near the outer periphery of the sleeve 310 mate with the inner wall of the reset member 640. The first screw 610 pushes the steel ball 620 forward, and the expansion pins 630 open the reset member 640 so that the reset member 640 contacts the inner wall of the hole of the bearing seat 100, and the bearing seat 100 is positioned through the hole of the bearing seat 100. When the first screw 610 moves backward, the reset member 640 resets and tightens inward, and the two expansion pins 630 move closer to each other. Under the action of the concave edge compression, the steel ball 620 rolls backward in the sleeve 310. The reset member 640 makes the tensioning and retraction of the expansion pins 630 smoother, further improving the stability and reliability of the bearing seat 100 clamping and increasing the clamping speed. It is understood that in this embodiment, the reset member 640 is a wire locking ring. Each bracket 300 is connected to only one tensioning component 600, and the positioning effect can be achieved by tensioning only one of the holes of the four bearings 100. However, this embodiment does not limit the number of tensioning components 600, as long as they can achieve the positioning effect with the positioning plate 400.

[0046] Reference Figure 4 Specifically, when a bearing seat 100 is clamped on a bearing seat fixture, the bearing seat 100 and the positioning plate 400 are installed on the bracket 300. The push-out part 611 of the first screw 610 is rotated to squeeze the steel ball 620. The steel ball 620 pushes out the tension pin 630 to tension and fix the hole of the bearing seat 100. The bidirectional ball screw 212 is rotated to bring the two clamping blocks 500 closer to each other. When they contact the bearing seat 100, they stop rotating, thus completing the clamping of the bearing seat 100. With the center of base 200 as the center of symmetry, the bracket 300, positioning plate 400, and tensioning assembly 600 on base 200 are symmetrical about the center of base 200, i.e., each is provided in pairs. Simultaneously, two clamping inclined surfaces 510 are provided on each clamping block 500, allowing two shaft seats 100 to be mounted simultaneously on a single shaft seat fixture for arc turning. The two shaft seats 100 clamped on this fixture are symmetrically distributed about the center of base 200, with the two surfaces to be machined facing each other, cooperating with the two clamping blocks 500 to form the part machining position. The shaft seat fixture of this embodiment can improve the clamping efficiency and accuracy of the shaft seats 100, thereby improving the machining quality of the shaft seats 100 and increasing the production speed of the shaft seats 100.

[0047] In some embodiments of the present invention, the positioning plate 400 is connected to the bracket 300 via a limiting block 700. Two first grooves 320 are formed on the front end face of the bracket 300, extending from the left and right sides of the bracket 300 towards the center. Two second grooves 410, respectively matching the first grooves 320, are formed on the rear end face of the positioning plate 400. The limiting block 700 is located between the first grooves 320 and the second grooves 410 and is fixedly connected to the bracket 300. The upper and lower ends of the positioning plate 400 are connected to the bracket 300 via screws. When the positioning plate 400 needs to be disassembled or installed, it can quickly locate its relative position to the bracket 300 through the cooperation of the second grooves 410 and the limiting block 700, thereby increasing the speed of positioning plate replacement and improving production efficiency.

[0048] The vertical lathe of this invention includes a bearing fixture according to the first aspect of the invention described above.

[0049] According to the embodiments of the present invention, the vertical lathe, by adopting the above-mentioned bearing fixture, improves the clamping speed and accuracy of the bearing 100, has high positioning accuracy and good clamping reliability, and improves the machining efficiency of the vertical lathe.

[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A shaft seat clamp, characterized in that, include: The base has a first direction and a second direction that are perpendicular to each other; Two supports are symmetrically arranged on opposite sides of the base along the first direction; Two positioning plates are respectively disposed on the corresponding brackets, and the positioning plates are connected to the end face of the brackets facing the center of the base; Two clamping blocks are symmetrically arranged on the other two opposite sides of the base along the second direction, and the clamping blocks are located between the two positioning plates; A sliding component is disposed on the base, and the sliding component is connected to the clamping block to drive the clamping block to slide along the second direction of the base; The tensioning component is disposed on the bracket and extends along the end face of the bracket toward the center of the base; The sliding assembly includes a slider and a bidirectional ball screw. The bidirectional ball screw has threaded sleeves at both ends. The slider is fixedly connected to the threaded sleeves so that the slider can slide along the bidirectional ball screw. The clamping block is fixedly connected to the slider. The clamping block has clamping inclined surfaces on both sides along its width direction. The two clamping inclined surfaces are used to cooperate with the workpiece for positioning. The tensioning assembly includes a first screw, a steel ball, and two expansion pins. The bracket has a sleeve, the first screw is disposed inside the sleeve, the first screw has a push-out portion that abuts against the steel ball, the sleeve has a through hole for installing the expansion pins, and the opposite ends of the two expansion pins form a concave flange, with the steel ball disposed in the concave flange. The tensioning assembly also includes a reset member, and the sleeve is further provided with a receiving groove for fitting the reset member around the circumference of the sleeve, so that the two expansion pins can be tensioned or reset radially along the sleeve. Fit the tensioning assembly into the hole of the bearing seat. The bearing seat mates with the positioning plate. Adjust the tensioning assembly to install the bearing seat on the bracket. The bearing seats are installed symmetrically.

2. The shaft seat clamp according to claim 1, characterized in that, The sliding assembly includes a pressure plate and a clamping slide. The clamping slide is fixedly connected to the base and has a third groove. The lower end face of the pressure plate cooperates with the bottom wall of the third groove to form a track for the slider to slide.

3. The shaft seat fixture according to claim 2, characterized in that, The clamping slide is connected to a positioning seat, and the bidirectional ball screw has two protrusions, with the positioning seat located between the two protrusions.

4. The shaft seat fixture according to claim 3, characterized in that, The positioning seat is provided with a fourth groove that cooperates with the bidirectional ball screw, and the distance between the two protrusions is greater than the width of the positioning seat.

5. The shaft seat fixture according to claim 1, characterized in that, The bracket is provided with a first groove, the positioning plate is provided with a second groove, and the shaft seat clamp also includes a limiting block. The two ends of the limiting block are respectively connected to the first groove and the second groove, so that the positioning plate is installed on the bracket.

6. A vertical lathe, characterized in that, Includes the bearing fixture according to any one of claims 1 to 5.

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