Mandrel straightening tool and pressure equipment

Abstract

The utility model provides a mandrel straightening tool, which relates to the technical field of grinding equipment and comprises a bottom plate, two positioning seats are symmetrically arranged on the bottom plate, and positioning grooves are arranged at the top ends of the positioning seats; a pressure seat is arranged on one side of the bottom plate, a pressure sensing device is horizontally arranged in the pressure seat towards the bottom plate, an ejector rod is arranged at the bottom end of the pressure sensing device in a telescopic mode, the pressure seat is further connected with a T-shaped seat through a spring piece, and the other side of the T-shaped seat and the bottom end of the mandrel clamped into the positioning groove are located on the same horizontal line. And the tail part of the T-shaped seat is opposite to and separated from the ejector rod. The utility model further provides pressure equipment, and the problems that in the prior art, a straightening method wastes time and labor, the detection efficiency cannot meet the production requirement easily, the manual straightening precision is not high, and the use effect of the mandrel is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding processing equipment, in particular to a mandrel straightening tooling and a pressure device. Background Art

[0002] As a key component inside the honing head, the mandrel provides a stable support for other components such as the oilstone seat and the abrasive strip, so that the honing head can maintain a stable operating state during high-speed rotation or honing processing, reduce vibration and offset, improve processing accuracy, ensure that the honing head can work according to a predetermined trajectory and depth during processing, avoid unnecessary damage to the workpiece. At the same time, the mandrel usually needs to bear various loads and pressures generated during the honing process. By dispersing the pressure to the entire structure of the mandrel and the honing head, the occurrence of local stress concentration and excessive wear is avoided. However, during continuous use, the mandrel will be bent and deformed, and the mandrel needs to be straightened again.

[0003] The existing straightening method generally places the mandrel on the fixture of the straightening machine, adjusts the position of the fixture according to the bending situation to ensure stable clamping of the mandrel, then starts the straightening machine, applies a force opposite to the bending direction to the mandrel, uses a sensor to detect the straightness change of the mandrel in real time, and gradually adjusts the applied force and direction according to the feedback result to ensure the straightening effect. The above method is not only time-consuming and laborious, and the straightening efficiency is difficult to meet the production requirements, but also the straightening accuracy of the mandrel calibrated manually is not high, which may affect the use effect of the mandrel. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a mandrel straightening tooling, which solves the problems of time-consuming and laborious straightening method, difficult detection efficiency to meet production requirements, low manual straightening accuracy and affecting the use effect of the mandrel in the prior art.

[0005] According to an embodiment of the utility model, a mandrel straightening tooling includes a bottom plate which is fixedly arranged, and further includes:

[0006] Positioning seats, two of the positioning seats are symmetrically arranged on the bottom plate, and a positioning groove for the mandrel to be inserted is arranged at the top of the positioning seat;

[0007] A pressure seat, the pressure seat is arranged on one side of the bottom plate opposite to the plane where the positioning seat is located, a pressure sensing device is horizontally arranged in the pressure seat towards the bottom plate, and a top rod is telescopically arranged at the bottom end of the pressure sensing device;

[0008] A T-shaped seat, one side of the head of the T-shaped seat is connected to the pressure seat through a spring piece, the other side of the top end is at the same horizontal line as the bottom end of the mandrel when the mandrel is inserted into the positioning groove, and the tail of the T-shaped seat is opposite to and separated from the top rod.

[0009] The technical principle of the present utility model is as follows: the core shaft to be straightened is inserted into the positioning groove on the positioning seat. If there is a bend in the contact part with the T-shaped seat, a downward pressure force will be generated on one side of the T-shaped seat. Since the other side of the T-shaped seat head and the pressure seat are connected by a spring sheet, this downward pressure force will be converted into a lateral pressure on the push rod at the tail of the T-shaped seat. The push rod will extend and retract inward to transmit the force to the pressure sensing device. At this time, it can be determined that there is a bend in this part of the core shaft. Then, downward pressure can be applied to the core shaft by an external device to straighten the core shaft. According to the information given by the pressure sensing device, the position of the core shaft is continuously adjusted. By repeating the above actions, the straightening of the core shaft can be completed.

[0010] Furthermore, a sliding seat is fixedly connected to the bottom of the positioning seat, a sliding key is fixedly connected to the bottom of the sliding seat, and a first sliding groove for the sliding key to slide is provided on the bottom plate.

[0011] Furthermore, the pressure sensing device includes a pressure gauge and a pressure sensor.

[0012] Furthermore, the base plate is fixedly provided with a supporting vertical plate on the opposite side of the pressure seat, and the supporting vertical plate is connected to a probe body through a spring sheet on the side close to the pressure seat. The top end of the probe body and the bottom end of the core shaft when they are inserted into the positioning groove are located on the same horizontal line, and the bottom end of the probe body is separated from the top end of the T-shaped seat away from the pressure seat.

[0013] Furthermore, a connecting plate is fixedly provided on the bottom plate, and the connecting plate spans the bottom plate and is fixedly connected to the supporting vertical plate.

[0014] Furthermore, a leveling assembly is provided on the pressure seat, and the leveling assembly includes an adjusting bevel block. A leveling port for embedding the adjusting bevel block is provided at the connection between the connecting plate and the pressure seat, and a leveling bolt that can be screwed into the connecting plate is provided at the tail of the adjusting bevel block to control the distance at which the adjusting bevel block is embedded in the leveling port.

[0015] Furthermore, the end of the connecting plate facing away from the supporting vertical plate is fixedly connected to a support seat, a second sliding groove is provided in the support seat, the pressure seat is slidably provided in the second sliding groove, and the support seat is provided with a first tightening bolt on the side wall which can be screwed into and tightened against the pressure seat.

[0016] Furthermore, a third sliding groove is provided on the support plate, a sliding support block is slidably provided in the third sliding groove, the sliding support block is connected to the probe body through a spring sheet, and a third tightening bolt is provided on the side wall of the support plate which can be screwed into and tightened against the sliding support block.

[0017] Furthermore, a positioning block is fixedly arranged in the positioning groove, and a V-shaped opening is arranged at the top of the positioning block.

[0018] According to an embodiment, a pressure device is further provided, which includes the above-mentioned mandrel straightening tooling.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The T-shaped seat can convert the downward pressure of the mandrel into the lateral pressure on the opposing rod, so that the pressure sensing device can detect the transmitted pressure in real time, facilitating the observation of the mandrel state, and the pressure transmission ratio can be changed by adjusting the aspect ratio of the length and width of the T-shaped seat, thereby improving the straightening accuracy.

[0021] 2. The T-shaped seat is connected to the pressure seat through a spring piece. After the single straightening of the mandrel is completed, the probe body and the T-shaped seat can immediately return to the initial state, facilitating the start of the next straightening and improving the straightening efficiency. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0023] Figure 2 It is a schematic diagram of the structure of the positioning seat of an embodiment of the utility model.

[0024] Figure 3 It is a schematic diagram of the structure of some components without the positioning seat of an embodiment of the utility model.

[0025] Figure 4 It is Figure 3 a schematic diagram of the structure at A in

[0026] In the above-mentioned drawings: 1. Base plate; 11. Base; 12. First sliding groove; 2. Slide seat; 21. Slide key; 3. Positioning seat; 31. Positioning groove; 32. Positioning block; 321. Positioning hole; 33. Support groove; 34. Plug; 4. Connecting plate; 41. Adjusting inclined block; 411. Leveling bolt; 4 I2. Leveling port; 42. Support seat; 421. First tightening bolt; 422. Second sliding groove; 43. Positioning bolt; 44. Pressure seat; 5. Dial indicator; 51. Opposing rod; 52. Second tightening bolt; 6. Spring piece; 7. Support vertical plate; 71. Third sliding groove; 72. Sliding support block; 721. Third tightening bolt; 73. Adjusting screw; 74. Measuring rod; 75. Probe body; 751. Installation groove; 8. T-shaped seat; 91. First flat probe; 92. Second flat probe; 93. Third flat probe; . Mandrel. Detailed Embodiments

[0027] The technical solutions in the utility model will be further described below with reference to the drawings and embodiments.

[0028] As Figure 1 shown, an embodiment of the present utility model provides a mandrel straightening tooling, including a bottom plate 1. A base 11 is fixedly connected to the bottom of the bottom plate 1 by bolts. Two positioning seats 3 are symmetrically arranged on the bottom plate 1. A positioning groove 31 for the mandrel 10 to be inserted is arranged at the top of the positioning seat 3.

[0029] As Figure 1 and Figure 2 shown, a sliding seat 2 is fixedly connected to the bottom of the positioning seat 3. The sliding seat 2 is connected to the positioning seat 3 by pins and bolts. A sliding key 21 is fixedly connected to the bottom of the sliding seat 2. A first sliding groove 12 for the sliding key 21 to slide is arranged on the bottom plate 1. The two positioning seats 3 can slide on the first sliding groove 12 to change the distance between each other to adapt to the bending of the mandrel 10 with different lengths and different positions. At the same time, a positioning block 32 is fixedly arranged in the positioning groove 31. A V-shaped opening is arranged at the top of the positioning block 32. For the convenience of disassembly and assembly, a positioning hole 321 is also arranged in the V-shaped opening. A bolt is arranged in the positioning hole 321. The bolt can be screwed tightly with the positioning groove 31 to fix the positioning block 32. Therefore, the positioning block 32 can be replaced and adjusted according to the size of the mandrel 10 so that the V-shaped opening can better clamp the mandrel 10. At the same time, in order to further increase the stability of the positioning block 32, a support groove 33 is also arranged on one side of the positioning groove 31. A plug block 34 is arranged in the support groove 33. A tightening bolt is arranged on the side wall of the positioning seat 3 far from the positioning block 32 of the support groove 33. The tightening bolt can tighten the plug block 34 so that the plug block 34 can apply a supporting force to the groove wall of the support groove 33 close to the positioning block 32 to ensure that the positioning block 32 can still maintain stability and will not shift after being subjected to multiple pressure impacts during the straightening process.

[0030] As Figure 1 、 Figure 3 and Figure 4 shown, the mandrel straightening tooling further includes a pressure seat 44. The pressure seat 44 is arranged on one side of the bottom plate 1 facing the plane where the positioning seat 3 is located. A pressure sensing device is horizontally inserted into the pressure seat 44 towards the bottom plate 1. The pressure sensing device includes a pressure gauge or a pressure sensor. Here, a dial indicator 5 is preferably used. A top rod 51 is telescopically arranged at the bottom end of the dial indicator 5 for transmitting pressure to the dial indicator 5. The dial indicator 5 can be adjusted to insert into the pressure seat 44 by horizontal movement. A second tightening bolt 52 for screwing in and pressing against the dial indicator 5 is arranged on the side wall of the pressure seat 44.

[0031] As Figure 1 、 Figure 3 and Figure 4As shown, the mandrel straightening tooling further includes a T-shaped seat 8. One side of the head of the T-shaped seat 8 is connected to the pressure seat 44 through a spring plate 6. The other side of the top end is at the same horizontal line as the bottom end of the mandrel 10 when it is inserted into the positioning groove 31. The tail of the T-shaped seat 8 is facing away from the ejector rod 51. So that the force exerted by the mandrel 10 on the one side of the head of the T-shaped seat 8 can be converted into the force of the tail of the T-shaped seat 8 on the ejector rod 51 due to the connection of the spring plate 6, thereby the bending degree of the mandrel 10 can be detected in real time. To reduce the direct contact between the mandrel 10 and the T-shaped seat 8, which may cause excessive pressure during straightening and damage the dial indicator 5, the mandrel straightening tooling further includes a force transmission component. The force transmission component includes a support vertical plate 7 and a probe body 75. The support vertical plate 7 is fixedly arranged on the side of the bottom plate 1 opposite to the pressure seat 44. The probe body 75 is connected to the side of the support vertical plate 7 close to the pressure seat 44 through a spring plate 6. The top end of the probe body 75 is at the same horizontal line as the bottom end of the mandrel 10 when it is inserted into the positioning groove 31. The bottom end of the probe body 75 is spaced from the top end of the side of the T-shaped seat 8 facing away from the pressure seat 44. To further improve the detection accuracy, a first flat probe 91 is arranged at the top end of the probe body 75, and a circular probe concentric with the first flat probe 91 is arranged at the bottom end of the probe body 75. The T-shaped seat 8 is respectively provided with a second flat probe 92 and a third flat probe 93 at the positions spaced from the circular probe and the ejector rod 51, which are used to reduce the contact area and improve the straightening accuracy.

[0032] As Figure 3 and Figure 4 As shown, to increase the overall stability of the tooling, a connecting plate 4 is fixedly arranged on the bottom plate 1. The connecting plate 4 straddles the bottom plate 1 and is fixedly connected to the support vertical plate 7. The middle part of the connecting plate 4 is fixedly connected to the bottom plate 1 through a positioning bolt 43. To enable the pressure seat 44 to adjust its height to increase the applicability of the tooling, a support seat 42 is further arranged below the pressure seat 44. The support seat 42 is fixedly connected to the connecting plate 4 at the bottom. A second sliding groove 422 is arranged in the support seat 42. The pressure seat 44 can slide up and down in the second sliding groove 422. A first tightening bolt 421 that can be screwed into and tighten the pressure seat 44 is arranged on the side wall of the support seat 42. A leveling component is further arranged on the pressure seat 44. The leveling component includes an adjusting wedge 41. The inclined end of the adjusting wedge 41 is wedge-shaped. A leveling opening 412 for the adjusting wedge 41 to be embedded is arranged at the connection between the connecting plate 4 and the pressure seat 44. A leveling bolt 411 in the same direction as the wedge-shaped inclined end is arranged at the tail of the adjusting wedge 41. The leveling bolt 411 can be screwed into the connecting plate 4 to control the distance of the adjusting wedge 41 embedded in the leveling opening 412. Through the supporting force provided by the adjusting wedge 41, the angle of the pressure seat 44 can be changed, thereby adjusting the angle of the dial indicator 5.

[0033] As Figure 3 shown, in order to enable the probe body 75 to adjust its height to increase the applicability of the tooling, a third sliding groove 71 is further provided on the supporting vertical plate 7. A sliding support block 72 is slidably arranged in the third sliding groove 71. The sliding support block 72 is vertically provided with a threaded hole. At the same time, an adjusting screw rod 73 matched with the threaded hole is provided at the top end of the supporting vertical plate 7. A through hole for the adjusting screw rod 73 to pass through is provided on the top wall of the supporting vertical plate 7. The sliding support block 72 and the probe body 75 are oppositely connected by two sets of upper and lower spring plates 6. And a third tightening bolt 721 that can be screwed into and press against the sliding support block 72 is provided on the side wall of the supporting vertical plate 7. An installation groove 751 horizontally penetrating both sides is provided in the middle of the probe body 75. A measuring rod 74 is vertically bolted in the installation groove 751 for positioning and comparative observation.

[0034] The technical principle of the present utility model is as follows: Select a suitable positioning block 32 according to the size of the mandrel 10, and fixedly install the positioning block 32 in the positioning groove 31. Clamp the mandrel 10 to be straightened into the V-shaped opening on the positioning block 32. If there is a bend in the part contacting the first flat probe 91 of the probe body 75, the bent part of the mandrel 10 will automatically turn downward due to gravity, thereby generating a downward pressure on the probe body 75. This part of the downward pressure will further pass through the probe body 75 and be transmitted to the second flat probe 92 on one side of the T-shaped seat 8 through the round side probe. Since the other side of the head of the T-shaped seat 8 and the pressure seat 44 are connected by a spring plate 6, the downward pressure applied by the mandrel 10 will be converted into the pressure of the third flat probe 93 at the tail of the T-shaped seat 8 against the ejector rod 51. The ejector rod 51 transmits the force to the dial indicator 5. At this time, it can be determined that there is a bend in this part of the mandrel 10. Then, a downward pressure can be applied to the mandrel 10 through an external device (not shown in the figure) to straighten the mandrel 10. After the two ends of the mandrel 10 are stressed, they will drive the middle bent part to stretch towards the two ends, so that the bent part approaches the central axis of the mandrel 10. The allowable deviation range can be set according to the distance between the positioning seats 3. When the value displayed by the dial indicator 5 reaches the allowable deviation range, further adjust the position of the positioning seat 3 to change the pressure-receiving position of the mandrel 10, and repeat the above actions to complete the straightening of the mandrel 10.

[0035] The utility model can convert the downward pressure of the mandrel 10 into the lateral pressure on the opposing rod 51 through the T-shaped seat 8, so that the dial indicator 5 can detect the transmitted pressure in real time, facilitating the observation of the state of the mandrel 10. The pressure transmission ratio can be changed by adjusting the aspect ratio of the length and width of the T-shaped seat 8, thereby improving the straightening accuracy. The probe body 75 is connected to the support vertical plate 7 through the spring plate 6, and the T-shaped seat 8 is connected to the pressure seat 44 through the spring plate 6. After the single straightening of the mandrel 10 is completed, the probe body 75 and the T-shaped seat 8 can immediately return to the initial state, facilitating the start of the next straightening and improving the straightening efficiency. Through the first sliding groove 12 provided on the connecting plate 4, the second sliding groove 422 provided in the support seat 42, and the third sliding groove 71 provided on the support vertical plate 7, the positions of the components of the tooling can be effectively adjusted to adapt to mandrels 10 of different specifications and states, greatly increasing the applicability of the device.

[0036] As Figure 1 and Figure 3 shown, according to the embodiment, the utility model further provides a pressure device, which includes the above-mentioned mandrel straightening tooling. The pressure device applies pressure to the mandrel 10 placed on the positioning block 32, continuously adjusts the position of the positioning seat 3 according to the numerical feedback of the dial indicator 5, and repeats the application of pressure to complete the straightening of the mandrel 10.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the utility model, and they should all be covered by the scope of the claims of the utility model.

Claims

1. A mandrel straightening tooling, comprising a bottom plate (1), the bottom plate (1) is horizontally and fixedly arranged, characterized in that, Also includes: Positioning seats (3), two positioning seats (3) are symmetrically arranged on the base plate (1), and the top of each positioning seat (3) is provided with a positioning groove (31) for the core shaft (10) to be clamped; A pressure seat (44), the pressure seat (44) is arranged on a side of the bottom plate (1) facing the plane where the positioning seat (3) is located, a pressure sensing device is arranged horizontally in the pressure seat (44) toward the bottom plate (1), and a push rod (51) is telescopically arranged at the bottom end of the pressure sensing device; A T-shaped seat (8), wherein one side of the head of the T-shaped seat (8) is connected to the pressure seat (44) via a spring sheet (6), the top end of the other side is located on the same horizontal line as the bottom end of the core shaft (10) when it is inserted into the positioning groove (31), and the tail end of the T-shaped seat (8) is directly opposite to and separated from the push rod (51).

2. The mandrel straightening tooling according to claim 1, characterized in that: The bottom of the positioning seat (3) is fixedly connected to a slide seat (2), the bottom of the slide seat (2) is fixedly connected to a slide key (21), and a first sliding groove (12) for the slide key (21) to slide is provided on the bottom plate (1).

3. The mandrel straightening tooling according to claim 1, wherein: The pressure sensing device includes a pressure gauge and a pressure sensor.

4. A mandrel straightening tooling according to claim 1, wherein: The base plate (1) is fixedly provided with a support vertical plate (7) on the opposite side of the pressure seat (44); the support vertical plate (7) is connected to a probe body (75) via a spring sheet (6) on the side close to the pressure seat (44); the top end of the probe body (75) and the bottom end of the core shaft (10) when clamped in the positioning groove (31) are located on the same horizontal line; the bottom end of the probe body (75) is separated from the top end of the T-shaped seat (8) on the side away from the pressure seat (44).

5. The mandrel straightening tooling according to claim 4, wherein: A connecting plate (4) is fixedly provided on the bottom plate (1), and the connecting plate (4) spans the bottom plate (1) and is fixedly connected to the supporting vertical plate (7).

6. The mandrel straightening tooling according to claim 5, characterized in that: The pressure seat (44) is also provided with a leveling assembly, which includes an adjusting bevel block (41). A leveling opening (412) for the adjusting bevel block (41) to be embedded is provided at the connection between the connecting plate (4) and the pressure seat (44). A leveling bolt (411) that can be screwed into the connecting plate (4) is provided at the tail of the adjusting bevel block (41) to control the distance that the adjusting bevel block (41) is embedded in the leveling opening (412).

7. The mandrel straightening tooling according to claim 5, characterized in that: One end of the connecting plate (4) facing away from the supporting vertical plate (7) is fixedly connected to a supporting seat (42), a second sliding groove (422) is provided in the supporting seat (42), the pressure seat (44) is slidably provided in the second sliding groove (422), and a first tightening bolt (421) which can be screwed into and pressed against the pressure seat (44) is provided on the side wall of the supporting seat (42).

8. The mandrel straightening tooling according to claim 4, characterized in that: A third sliding groove (71) is provided on the supporting vertical plate (7), a sliding support block (72) is slidably provided in the third sliding groove (71), the sliding support block (72) is connected to the probe body (75) via a spring sheet (6), and a third tightening bolt (721) is provided on the side wall of the supporting vertical plate (7) and can be screwed into and pressed against the sliding support block (72).

9. The mandrel straightening tooling according to claim 1, characterized in that: A positioning block (32) is further fixedly arranged in the positioning groove (31), and a V-shaped opening is arranged at the top of the positioning block (32).

10. A pressure device, characterized in that: It includes a mandrel straightening tooling according to any one of claims 1-9.

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