A feed device for a tap machining apparatus

Abstract

This utility model provides a feeding device for tapping equipment, belonging to the field of mechanical technology. It solves the problem of low machining accuracy in existing tapping equipment. The base and floating seat of this processing equipment are both hollow right-angled triangular prisms. The base and floating seat are connected by two steel plates, forming a cuboid shape. The floating seat is located directly above the base, with a gap between them. Both steel plates are vertically arranged, with one plate located at the top rear of the floating seat and the other at the bottom front. One end of the feed device's drive shaft is fixedly connected to a cam. One end of a rocker arm is hinged to the base, and the other end rests against the cam under the elastic force of an elastic element. The rocker arm is also connected to the floating seat. The drive shaft drives the cam to rotate, enabling the rocker arm to overcome the elastic force of the steel plates and push the floating seat forward. This feeding device for tapping equipment has the advantage of improving the machining quality of taps.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a feeding device for tap processing equipment. Background Technology

[0002] A tap is a precision cutting tool used to cut internal threads in holes. Taps are the most common machining tool used by manufacturing operators when tapping, and tapping is usually done by grinding on a grinding machine.

[0003] Existing grinding machines for tap grinding, such as the Chinese patent document that discloses a feeding mechanism for processing taps [Patent No.: 202220198036.5; Application Publication No.: CN217413383U], include a base plate and a tap to be processed. Four support columns are fixedly installed on the rear side of the upper end of the base plate, and a feeding box is fixedly installed on the upper end of the four support columns. The feeding box includes a first box body, and a pushing device is provided at the front of the feeding box. The pushing device includes a first drive motor. A conveying device is fixedly installed on the right side of the upper end of the base plate. The conveying device includes a first fixed shaft. A grinding device is fixedly installed on the front side of the upper end of the base plate. The grinding device includes a frame.

[0004] In this type of grinding machine feeding mechanism, when the feeding hole containing the tap to be processed is aligned with the machine frame, the first telescopic frame is activated. The first telescopic frame pushes an electromagnet to attract the tap to be processed from the feeding hole onto the support frame. The second drive motor is then activated, and the tap to be processed is rotated through the first telescopic frame to grind the tool. However, in this type of grinding machine feeding mechanism, the tap's position is fixed after it is placed on the support frame. That is, the tap does not move during the processing. The grinding tool needs to be moved to a suitable position to grind the tap. Since the tap has a front angle, back angle, and thread, it requires multi-dimensional processing. This type of feeding mechanism obviously cannot meet this requirement. The tap needs to be repositioned and processed again, thereby reducing the processing accuracy. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a feeding device for tap processing equipment, thereby solving the technical problem of how to improve the processing quality of taps.

[0006] The objective of this utility model can be achieved through the following technical solution: a feeding device for a tap processing equipment, the processing equipment including a base, characterized in that the processing equipment further includes a floating seat and two long, elastic steel plates, the front side of the floating seat is provided with a positioning component for positioning the tap, both the base and the floating seat are hollow right-angled triangular prisms, the base and the floating seat are connected by the two steel plates to form a cuboid shape, the floating seat is located directly above the base and there is a gap between the floating seat and the base, both steel plates are along... The device is arranged vertically, with one steel plate located at the top rear side of the floating seat and the other steel plate located at the bottom front side of the floating seat. The feeding device includes a drive shaft, a rocker arm, and an elastic element that are rotatable and pass through the base. One end of the drive shaft is fixedly connected to a cam. One end of the rocker arm is hinged to the base, and the other end abuts against the cam under the elastic force of the elastic element. The rocker arm is also connected to the floating seat. The drive shaft drives the cam to rotate, which enables the rocker arm to overcome the elastic force of the steel plate and push the floating seat forward.

[0007] During operation, the tap is installed and positioned on the positioning assembly. The drive shaft drives the cam to rotate. The rotation of the cam changes the position of the cam's eccentricity, allowing the cam to push the rocker arm to swing. This causes the rocker arm to overcome the elasticity of the steel plates and push the floating seat forward, thus positioning the tap in the optimal machining position. Combined with the machining tool, multi-dimensional machining can be performed, allowing the tool to machine the tap more precisely without needing to re-clamp the tap, thereby improving the machining quality. Because the steel plates are elastic, both steel plates are vertically positioned, and the floating seat is located directly above the base with a gap between them. When the rocker arm swings and pushes the floating seat, the steel plates deflect and bend, causing the floating seat to rotate. The gap prevents the floating seat from getting stuck, allowing it to push the tap a certain distance to the optimal machining position, further improving the machining quality.

[0008] In the feeding device of the aforementioned tapping equipment, the steel sheet is fixedly connected to the floating seat via an elongated upper clamping bar, and the steel sheet is fixedly connected to the base via an elongated lower clamping bar. Rubber blocks made of rubber material are tightly fitted between the two ends of the upper and lower clamping bars. These rubber blocks provide support and have a certain degree of elasticity, allowing for some deformation. The rubber blocks can cooperate with the steel sheet to deform, causing the floating seat to shift by a certain amount, but the displacement is not excessive, ensuring the stability of the processing equipment.

[0009] In the feeding device of the aforementioned tapping equipment, the width of the slit is between 5 and 15 mm.

[0010] In the feeding device of the aforementioned tapping equipment, the elastic element includes a tension rod and a first spring. One end of the rocker arm has a through tension hole with an annular stepped surface. One end of the tension rod has a protruding retaining edge, and the other end of the tension rod passes through the tension hole and is fixedly connected to the base. The first spring is sleeved on the tension rod, and its two ends act on the stepped surface and the retaining edge, respectively, causing the other end of the rocker arm to abut against the cam. The first spring is in a compressed state, always providing elastic force so that the other end of the rocker arm always abuts against the cam. In actual production, a tension spring can be used, with its two ends acting on the base and the other end of the rocker arm, respectively, to tighten the other end of the rocker arm and abut against the cam.

[0011] In the feeding device of the aforementioned tapping equipment, a roller is rotatably provided at the other end of the rocker arm. Under the action of the elastic force of the elastic element, the outer peripheral wall of the roller abuts against the outer peripheral wall of the cam. The cooperation between the roller and the cam makes the swing of the rocker arm smoother and more precise, thereby improving the processing quality of the tap.

[0012] In the feeding device of the aforementioned tapping equipment, baffle plates are fixedly attached to the outer walls of both ends of the floating seat. These baffle plates extend downwards to block the gap, and after extending downwards past the gap, they abut against the outer walls of both ends of the base. The baffle plates block the gap, preventing external impurities from entering the processing equipment, ensuring the swing accuracy of the rocker arm, and thus improving the tapping accuracy. The baffle plates are fixed only to the floating seat, not to the base, and their placement does not affect the movement of the floating seat.

[0013] In the feeding device of the aforementioned tapping equipment, the baffle plate is fixedly connected to the floating seat by several bolts. A tension spring is hinged to one of the bolts, and a lever is fixedly connected to the other end of the rocker arm. One of the baffle plates has a long, horizontally oriented sliding groove. The outer end of the lever passes through the gap and the sliding groove. The tension spring hooks the lever, separating the other end of the rocker arm from the cam. When the cam needs to be replaced, the lever is hooked by the tension spring. The tension spring's force is greater than that of the first spring, preventing the roller from pressing against the cam, thus allowing the cam to be replaced easily. The bolts serve a dual purpose: fixing the baffle plate and hinged to the tension spring. Simultaneously, the gap between the floating seat and the base allows the lever to extend outside the processing equipment, where the tension spring can hold the rocker arm. The structure is simple and rationally designed. The sliding groove serves as a guide and limiter, ensuring the lever moves in a set direction without exceeding its limit.

[0014] In the feeding device of the aforementioned tapping equipment, one end of the base has a through-hole for disassembly, the cam is positioned adjacent to the disassembly hole, and the disassembly hole is positioned adjacent to the sliding groove. This structure makes the cam's disassembly / assembly position very close to the position of the tension spring, facilitating the operator's disassembly / assembly of the cam.

[0015] In the feeding device of the aforementioned tapping equipment, the rocker arm has a large mounting hole and a small mounting hole that are connected to each other. The large mounting hole is an open hole, and its opening can be detachably locked by fasteners. A large, annular gear is provided in the large mounting hole, and an arc-shaped protrusion protrudes inward from the inner side wall of the large gear. A small gear is provided in the small mounting hole, and an adjusting component is connected to the small gear. The large gear meshes with the small gear, and a hinge shaft passes through the large gear. The protrusion abuts against the outer peripheral wall of the hinge shaft, and bearings are fixed to both ends of the hinge shaft. The bearings are positioned in the floating seat. Loosening the fasteners allows adjustment of the position of the large gear, changing the initial position of the protrusion against the hinge shaft, thereby altering the tap feed distance. After adjustment, the fastener is locked. Rotating the adjusting component allows the position of the large gear to be changed via the small gear, thus adjusting the tap feed distance.

[0016] In the feeding device of the aforementioned tapping equipment, the adjusting component includes a first universal joint fixed to the pinion, an adjusting knob passing through the floating seat, and a second universal joint located between the first universal joint and the adjusting knob. The top of the first universal joint has a lower U-shaped groove arranged vertically, and the bottom of the adjusting knob has an upper U-shaped groove arranged vertically. The top of the second universal joint is fixed with a pair of protruding upper pins, and the bottom is fixed with a pair of protruding lower pins. A second spring, an annular retaining pad, and an annular tensioning seat are sleeved on the second universal joint. The two ends of the second spring act on the retaining pad and the tensioning seat respectively, so that the upper pins are embedded in the upper U-shaped groove and the lower pins are embedded in the lower U-shaped groove. Since the adjusting component is connected to the floating seat and the rocker arm is connected to the base, the adjusting component, through the cooperation of the upper pins and the upper U-shaped groove and the lower pins and the lower U-shaped groove, can absorb the deformation of the floating seat after moving relative to the base, so that the adjusting component will not be damaged.

[0017] Compared with the prior art, the feeding device of the tapping equipment provided by this utility model has the following advantages:

[0018] 1. Due to the elasticity of the steel sheets, both steel sheets are set vertically, and the floating seat is located directly above the base with a gap between the floating seat and the base. When the rocker arm swings and pushes the floating seat, the steel sheets deform to a certain extent, causing the floating seat to deflect. The gap prevents the floating seat from getting stuck, allowing it to push the tap to move a certain displacement, placing the tap in the optimal processing position and improving the processing quality of the tap.

[0019] 2. When the cam of this feeding device needs to be replaced, the pull rod is hooked by the tension spring, so that the roller no longer abuts against the cam, thus allowing the operator to replace the cam easily. The bolt serves a dual purpose: it fixes the baffle plate and also acts as a hinge for the tension spring. At the same time, the gap between the floating seat and the base allows the pull rod to extend outside the processing equipment, so that the tension spring hanging outside the processing equipment can hold the rocker arm. The structure is simple and the design is reasonable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this tapping equipment.

[0021] Figure 2 This is a cross-sectional view of the overall structure of this tapping equipment.

[0022] Figure 3 This is a longitudinal sectional view of the overall structure of this tapping equipment.

[0023] Figure 4 This is a schematic diagram of the overall structure of the feeding device.

[0024] Figure 5 This is a schematic diagram showing the positions of the lever and tension spring of this tapping equipment.

[0025] In the diagram, 1. Base; 2. Floating seat; 3. Steel plate; 4. Positioning assembly; 5. Gap; 6. Drive shaft; 7. Rocker arm; 8. Elastic element; 81. Tensioning rod; 811. Stop edge; 82. First spring; 9. Cam; 10. Upper clamping bar; 11. Lower clamping bar; 12. Rubber block; 13. Tensioning hole; 131. Stepped surface; 14. Roller; 15. Baffle plate; 16. Bolt; 17. Tension spring; 18. Lever; 19. Sliding groove; 20. Disassembly hole; 21. Large mounting hole; 22. Small mounting hole; 23. Large gear; 24. Protrusion; 25. Small gear; 26. Adjusting component; 261. First universal joint; 262. Adjusting knob; 263. Second universal joint; 264. Lower U-groove; 265. Upper U-groove; 266. Upper pin; 267. Lower pin; 268. Second spring; 269. retaining washer; 2610. Tensioner seat; 27. Hinge shaft; 28. Bearing. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figure 1 , Figure 2 , Figure 3 As shown, the processing equipment includes a base 1, a floating seat 2, a steel sheet 3, a positioning assembly 4, and a feeding device. The feeding device includes a drive shaft 6, a rocker arm 7, an elastic element 8, a cam 9, and a roller 14.

[0028] Both the base 1 and the floating seat 2 are hollow right-angled triangular prisms. The front of the floating seat 2 is equipped with a positioning component 4 for positioning the tap. There are two steel plates 3, which are elongated and elastic. The steel plates 3 are fixed to the floating seat 2 via an upper, elongated clamping strip 10, and to the base 1 via a lower, elongated clamping strip 11. Rubber blocks 12, made of rubber material, are tightly fitted between the ends of the upper and lower clamping strips 10 and 11, forming a cuboid shape when the base 1 and floating seat 2 are connected. The floating seat 2 is located directly above the base 1, and there is a gap 5 between them. In this embodiment, the width of the gap 5 is 10mm; in actual production, the width of the gap 5 is 5mm or 15mm. Both steel plates 3 are arranged vertically, with one steel plate 3 located at the top rear of the floating seat 2 and the other steel plate 3 located at the bottom front of the floating seat 2.

[0029] like Figure 4As shown, one end of the rocker arm 7 is hinged to the base 1, and the other end of the rocker arm 7 is rotatably equipped with a roller 14. The rocker arm 7 is also connected to the floating seat 2. Specifically, the rocker arm 7 has a large mounting hole 21 and a small mounting hole 22 that are connected. The large mounting hole 21 is an open hole, and the opening of the large mounting hole 21 can be detachably locked by a combination of fasteners such as bolts 16 and disc springs. A large ring-shaped gear 23 is provided in the large mounting hole 21. The inner side wall of the large gear 23 has an arc-shaped protrusion 24 that protrudes inward. A small gear 25 is provided in the small mounting hole 22. An adjusting element 26 is connected to the small gear 25. The large gear 23 meshes with the small gear 25. A hinge shaft 27 passes through the large gear 23. The protrusion 24 abuts against the outer peripheral wall of the hinge shaft 27. Bearings 28 are fixedly connected to both ends of the hinge shaft 27. The bearings 28 are positioned in the floating seat 2. The adjusting component 26 includes a first universal joint 261 fixed to the pinion 25, an adjusting knob 262 passing through the floating seat 2, and a second universal joint 263 located between the first universal joint 261 and the adjusting knob 262. The top of the first universal joint 261 has a lower U-shaped groove 264 arranged in the vertical direction, and the bottom of the adjusting knob 262 has an upper U-shaped groove 265 arranged in the vertical direction. The top of the second universal joint 263 is fixed with a pair of protruding upper pins 266, and the bottom is fixed with a pair of protruding lower pins 267. The second universal joint 263 is fitted with a second spring 268, an annular retaining pad 269, and an annular tensioning seat 2610. The two ends of the second spring 268 act on the retaining pad 269 and the tensioning seat 2610 respectively, so that the upper pins 266 are embedded in the upper U-shaped groove 265, and the lower pins 267 are embedded in the lower U-shaped groove 264.

[0030] The drive shaft 6 is inserted into the base 1 and is rotatable. One end of the drive shaft 6 is fixedly connected to the cam 9. The elastic element 8 includes a tension rod 81 and a first spring 82. One end of the rocker arm 7 has a through tension hole 13 with an annular stepped surface 131. One end of the tension rod 81 has a protruding stop 811. The other end of the tension rod 81 passes through the tension hole 13 and is fixedly connected to the base 1. The first spring 82 is sleeved on the tension rod 81. The two ends of the first spring 82 act on the stepped surface 131 and the stop 811 respectively, so that the outer peripheral wall of the roller 14 abuts against the outer peripheral wall of the cam 9.

[0031] A baffle plate 15 is fixedly attached to the outer walls of both ends of the floating seat 2. The baffle plate 15 extends downward to cover the gap 5, and after extending downward past the gap 5, it abuts against the outer walls of both ends of the base 1. Figure 4As shown, the baffle plate 15 is fixedly connected to the floating seat 2 by four bolts 16. A tension spring 17 is hinged to one of the bolts 16. The other end of the rocker arm 7 is fixedly connected to a lever 18. One of the baffle plates 15 has a long, horizontally oriented sliding groove 19. The outer end of the lever 18 passes through the gap 5 and the sliding groove 19. The tension spring 17 can hook the lever 18 to separate the other end of the rocker arm 7 from the cam 9. One end of the base 1 has a through-hole 20. The cam 9 is located adjacent to the 20, and the 20 is located adjacent to the sliding groove 19.

[0032] During operation, the tap is installed and positioned on the positioning component 4. The drive shaft 6 drives the cam 9 to rotate. The rotation of the cam 9 changes the position of the cam 9's eccentricity. The rotation of the cam 9 pushes the rocker arm 7 to swing through the roller 14, so that the rocker arm 7 overcomes the elasticity of the steel plate 3 and pushes the floating seat 2 forward, thereby allowing the tap to be in the optimal machining position.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0034] Although this article uses a lot of terms such as base 1, floating seat 2, steel plate 3, positioning component 4, gap 5, drive shaft 6, rocker arm 7, elastic element 8, tension rod 81, stop 811, first spring 82, cam 9, upper pressure bar 10, lower pressure bar 11, rubber block 12, tension hole 13, stepped surface 131, roller 14, baffle plate 15, bolt 16, tension spring 17, lever 18, sliding groove 19, disassembly hole 20, large mounting hole 21, small mounting hole 22, large gear 23, protrusion 24, small gear 25, adjusting component 26, first universal joint 261, adjusting knob 262, second universal joint 263, lower U-shaped groove 264, upper U-shaped groove 265, upper pin 266, lower pin 267, second spring 268, stop pad 269, tension seat 2610, hinge shaft 27, bearing 28, etc., the possibility of using other terms cannot be ruled out. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model.

Claims

1. A feed device for a tap machining apparatus, the machining apparatus comprising a base (1), characterised in that, The processing equipment also includes a floating seat (2) and two long, elastic steel plates (3). The front side of the floating seat (2) is provided with a positioning component (4) for positioning the tap. Both the base (1) and the floating seat (2) are hollow right-angled triangular prisms. The base (1) and the floating seat (2) are connected by the two steel plates (3) to form a cuboid. The floating seat (2) is located directly above the base (1), and there is a gap (5) between the floating seat (2) and the base (1). Both steel plates (3) are arranged vertically, and one of the steel plates (3) is located at the top of the rear side of the floating seat (2). Another steel plate (3) is located at the bottom of the front side of the floating seat (2). The feeding device includes a drive shaft (6) that passes through the base (1) and is rotatable, a rocker arm (7) and an elastic element (8). One end of the drive shaft (6) is fixedly connected to a cam (9). One end of the rocker arm (7) is hinged to the base (1), and the other end abuts against the cam (9) under the action of the elastic force of the elastic element (8). The rocker arm (7) is also connected to the floating seat (2). The drive shaft (6) drives the cam (9) to rotate, which enables the rocker arm (7) to overcome the elastic force of the steel plate (3) and push the floating seat (2) forward.

2. The tapping apparatus feed device according to claim 1, wherein The steel sheet (3) is fixedly connected to the floating seat (2) by an upper pressing strip (10) in the shape of a long strip, and the steel sheet (3) is fixedly connected to the base (1) by a lower pressing strip (11) in the shape of a long strip. A rubber block (12) made of rubber material is provided between the two ends of the upper pressing strip (10) and the lower pressing strip (11).

3. The tapping apparatus feed device according to claim 1, wherein The width of the gap (5) is between 5 and 15 mm.

4. The tapping apparatus according to claim 1 or 2 or 3, wherein The elastic element (8) includes a tension rod (81) and a first spring (82). One end of the rocker arm (7) has a through tension hole (13). The tension hole (13) has an annular stepped surface (131). One end of the tension rod (81) has a protruding stop (811). The other end of the tension rod (81) passes through the tension hole (13) and is fixedly connected to the base (1). The first spring (82) is sleeved on the tension rod (81). The two ends of the first spring (82) act on the stepped surface (131) and the stop (811) respectively, causing the other end of the rocker arm (7) to abut against the cam (9).

5. The tapping apparatus according to claim 1 or 2 or 3, wherein The other end of the rocker arm (7) is rotatably provided with a roller (14), and under the action of the elastic force of the elastic element (8), the outer peripheral wall of the roller (14) abuts against the outer peripheral wall of the cam (9).

6. The tapping apparatus according to claim 1 or 2 or 3, wherein A shielding plate (15) is attached and fixed to the outer side wall of both the left and right ends of the floating seat (2). The shielding plate (15) extends downward to cover the gap (5), and the shielding plate (15) extends downward past the gap (5) and then attaches to the outer side wall of both the left and right ends of the base (1).

7. The tapping apparatus feed device according to claim 6, wherein The shielding plate (15) is fixedly connected to the floating seat (2) by several bolts (16), one of the bolts (16) is hinged with a tension spring (17), and the other end of the rocker arm (7) is fixedly connected with a lever (18). One of the shielding plates (15) has a long strip-shaped sliding groove (19) arranged in the horizontal direction. The outer end of the lever (18) passes through the gap (5) and the sliding groove (19). The tension spring (17) can hook the lever (18) to separate the other end of the rocker arm (7) from the cam (9).

8. The tapping apparatus feed device according to claim 7, wherein One end of the base (1) has a through disassembly hole (20), the cam (9) is disposed adjacent to the disassembly hole (20), and the disassembly hole (20) is disposed adjacent to the sliding groove (19).

9. The tapping apparatus according to claim 1 or 2 or 3, wherein The rocker arm (7) has a large mounting hole (21) and a small mounting hole (22) that are connected. The large mounting hole (21) is an open hole. The opening of the large mounting hole (21) can be detachably locked by fasteners. The large mounting hole (21) is provided with a large ring gear (23). The inner side wall of the large gear (23) has an arc-shaped protrusion (24) that protrudes inward. The small mounting hole (22) is provided with a small gear (25). An adjusting member (26) is connected to the small gear (25). The large gear (23) meshes with the small gear (25). A hinge shaft (27) passes through the large gear (23). The protrusion (24) abuts against the outer peripheral wall of the hinge shaft (27). Both ends of the hinge shaft (27) are fixedly connected with bearings (28). The bearings (28) are positioned in the floating seat (2).

10. The tapping apparatus feed device according to claim 9, wherein The adjusting component (26) includes a first universal joint (261) fixed to the pinion (25), an adjusting knob (262) passing through the floating seat (2), and a second universal joint (263) located between the first universal joint (261) and the adjusting knob (262). The top of the first universal joint (261) has a lower U-shaped groove (264) arranged vertically, and the bottom of the adjusting knob (262) has an upper U-shaped groove (265) arranged vertically. The top of the second universal joint (263) is fixed to... A pair of protruding upper pins (266) are fixedly connected to the bottom of a pair of protruding lower pins (267). A second spring (268), an annular retaining pad (269), and an annular tensioning seat (2610) are sleeved on the second universal joint (263). The two ends of the second spring (268) act on the retaining pad (269) and the tensioning seat (2610) respectively, so that the upper pins (266) are embedded in the upper U-shaped groove (265) and the lower pins (267) are embedded in the lower U-shaped groove (264).

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